418 results about "Thiosulfate" patented technology

The invention discloses a silicate cement grinding aid and a preparation method thereof. The silicate cement grinding aid is prepared from the following main raw materials by weight: 3-6 parts of sodium hexametaphosphate, 2-5 parts of aluminum sulfate, 5-8 parts of tetra sodium salt of amino trimethylene phosphonic acid (ATMP.Na4), 4-6 parts of ethylene diamine tetra (methylene phosphonic acid) sodium, 38-45 parts of polymeric alkylol amine, 34-42 parts of triisopropanolamine, 8-12 parts of waste engine oil, 2-5 parts of sodium alpha-olefin sulfonate, 10-16 parts of sorbitol, 15-20 parts of diethylene glycol, 8-13 parts of polypropylene wax, 6-10 parts of oxidized polyethlene wax, 4-8 parts of lignite wax, 20-30 parts of odium thiosulfate, 12-18 parts of sodium thiosulfate and 15-20 parts of quicklime powder. The prepared silicate cement grinding aid has the advantages that the quality is stable, the effect is remarkable, the adding amount is small, the use is simple, and the adding is more convenient and reliable to control.

The present invention relates to a rubber composition for a sidewall, a clinch and an insulation comprising 20 to 60 parts by mass of filler, 1.0 to 4.0 parts by mass of sulfur and 0.1 to 10 parts by mass of at least one vulcanization accelerating aid selected from a group comprising a citraconimide compound, an organic thiosulfate compound, an alkylphenol-sulfur chloride condensate, a compound represented by the formula (2) and a metal salt of methacrylic acid represented by the formula (3), based on 100 parts by mass of a diene rubber component comprising 10 to 70% by mass of at least one diene rubber component (a) selected from a group comprising a solution polymerization-modified styrene-butadiene rubber, a tin-modified butadiene rubber and a butadiene rubber whose terminal is modified with a compound represented by the formula (1), and 20 to 80% by mass of a diene rubber component (b) other than the diene rubber component (a) for the purpose of improving rolling resistance and steering stability.

An elastomeric composition for forming a golf ball or a component thereof is disclosed that includes the use of a metal thiosulfate, either alone or in combination with one or more halogenated organic sulfur compounds, such as halogenated thiophenol (HTP), or salts thereof. The composition produces a molded product exhibiting an enhanced combination of increased compression (i.e., softness) and / or resilience (C.O.R.).

The invention discloses a preparation method and application of activated carbon for recycling gold and belongs to the field of wet metallurgy and precious-metal recovery. The method disclosed by the invention comprises the following steps: weighing a certain amount of activated carbon, washing to remove ash in the activated carbon by using deionized water, filtering and drying; stirring and dipping the activated carbon at normal temperature by using a transition metal salt solution, washing, filtering and drying; stirring and dipping at normal temperature by using ferrous cyanate ([Fe(CN)6]4-) salt solution in a certain concentration range, generating a Prussian blue analogue compound on the surface of the activated carbon, washing and filtering; and drying the filtered activated carbon for later use. According to the activated carbon prepared by the method, gold ([Au(S2O3)2]3-) in thiosulfate solution can be recycled, the highest recovery rate can be 100 percent, and the maximum capacity of the activated carbon can be 1.27kg / t.

Processes are provided for recovering precious metals from refractory materials using thiosulfate lixiviants. The processes can employ heap leaching or lixiviants that include one or more blinding agents.

The invention relates to a method for preparing a liquid antibacterial agent containing complex silver. Silver nitrate is used as a raw material. The method comprises the following steps of: preparing silver-containing filter residue from the silver nitrate, sodium chloride and sodium hydroxide, reacting the washed and filtered silver-containing filter residue and persulfate to obtain silver-containing initial solution, complexing the silver-containing initial solution, thiosulfate and phosphate, and adjusting the pH of the solution by using sodium carbonate and sodium silicate to obtain the liquid antibacterial agent containing the complex silver. The method has the advantages that: the antibacterial agent can be used after being diluted by using tap water, and can be mixed with most liquids containing negative ions, positive ions and nonionic surface active components for use; and in particular, the liquid antibacterial agent with halogen-containing ion solution stability has the properties of strong discoloration resistance, wide practicability, washing tolerance (the washing frequency is more than 50 times) and the like on fabric after-finish.

An improved phenoxyphosphazene compound is produced by treating a phenoxyphosphazene compound with (a) at least one adsorbent selected from activated carbon, silica gel, activated alumina, activated clay, synthetic zeolite and macromolecular adsorbents, (b) at least one reagent selected from metal hydrides, hydrazine, hypochlorites, thiosulfates, dialkyl sulfuric acids, ortho esters, diazoalkanes, lactones, alkanesultones, epoxy compounds and hydrogen peroxide, or (c) both the adsorbent and reagent, thereby reducing the acid value of said phosphazene compound to lower than 0.025 mgKOH / g.

The invention discloses a preparation method and application of 2-mercaptobenzothiazole modified activated carbon, belonging to the fields of wet metallurgy and precious metal recovery. The preparation method comprises the steps of dissolving 2-mercaptobenzothiazole as an activated carbon modifying agent with an organic solvent or a strong base solution, and preparing 2-mercaptobenzothiazole modified activated carbon by virtue of an impregnation method, wherein the 2-mercaptobenzothiazole modified activated carbon is used for adsorbing Au(S2O3)2<3->. According to the preparation method, the disadvantages that cyanogen is polluted during adsorption recovery of activated carbon supported copper cyanide complex ions (Cu(CN)4<2->), a modifying process of loaded prussian blue is complicated, and continuous adsorption is difficultly realized, and the like are solved; the modified activated carbon is capable of adsorbing gold in thiosulfate gold leaching and has the advantages of multistage adsorption capacity and the like.

A foliarly applicable plant nutrient composition comprises, in aqueous solution, (a) a first component comprising an agriculturally acceptable source of foliarly absorbable silicon; (b) a second component selected from agriculturally acceptable sources of thiosulfate ions, agents effective to inhibit polymerization of silicic acid or silicate ions, and mixtures thereof; and (c) as a third component, an agriculturally acceptable mixture of compounds selected from the group consisting of organic acids, organic compounds having funtional groups capable of reversibly binding or complexing with inorganic anions, and mixtures thereof. The composition is useful for silicon nutrition of a plant and for reducing susceptibility of a plant to fungal or bacterial disease.

The invention discloses a mercury contaminated soil in-situ restoration method. The method includes: preparation of extracting agent, namely dissolving water-soluble iodized salt, sulfate, nitrate and thiosulfate into water to prepare the extracting agent for restoration of mercury contaminated soil; and purification of mercury contaminated soil and regeneration of the extracting agent, namely subjecting the mercury contaminated soil and the extracting agent to mixing, stirring and centrifugal separation, wherein the centrifuged soil is clean soil; extracting 90% of mercury absorbable and usable for plants into supernatant, adding precipitating agent to recover mercuric sulfide and realize regeneration of the extracting agent, and reusing the regenerated extracting agent for the soil. Details are shown in the specification. The mercury contaminated soil in-situ restoration method has the advantages that mercury absorbable and usable for plants in soil is separated by extracting, and the purification efficiency is up to 90%; and materials of the extracting agent are low in cost and easy to obtain, the extracting agent preparation method is simple, feasible, recyclable and reusable, and thereby mercury contaminated soil purification cost is greatly reduced.

Alterations of redox homeostasis in mammals underlie a host of symptoms, syndromes and diseases, including AIDS and cancer, which can be successfully treated by administration to a mammal of therapeutically-effective amounts of sulfide compounds and / or thiosulfate compounds and / or thionite compounds and / or sulfite compounds and / or thionate compounds and / or any organic, inorganic or organometallic precursors thereof. The unique compositions of this invention contain one or more “active sulfur compounds” in combination with each other or with other therapeutic agents. The invention also encompasses the varying modes of administration of the therapeutic compounds. In particular, a novel method of combining active ingredient with wet cellulose is provided, which allows the wet cellulose to function as an enteric carrier.

The invention discloses flue gas mercury absorption liquid with functions of oxidizing and fixing, which consists of calcium-based desulphurization slurry, Fenton reagent and soluble thiosulfate. The Fenton reagent is used as oxidant to oxidize zero-state mercury, and the thiosulfate is used as a stabilizing agent to precipitate and stabilize the absorbed mercury. The precipitated mercury and the generated gypsum are precipitated together to form a solid phase, a part of the absorbed sulfur dioxide is absorbed into a liquid phase and oxidized into gypsum under the action of redundant oxidant, the absorption liquid separates the gypsum from the liquid phase through solid-liquid separation modes such as precipitation and the like, and the mercury is separated and removed at the same time. The mercury absorption liquid of the invention can be used for flue gas purification, and has the capacities of mercury oxidation absorption and liquid phase stabilization.

The invention discloses the technical field of flue gas demercuration method, and in particular to a mercury re-releasing inhibitor in wet flue gas desulfurization slurry and application method thereof. The inhibitor disclosed by the invention comprises the following components by weight percent: 25 to 45 percent of thiosulfate and 55 to 75 percent of sodium sulfide. The additive is added into the desulfurization slurry to inhibit the release of mercury; the adding amount of the additive is 100ml / L to 600mg / L. The inhibitor can react with Hg<2+> in the slurry well by utilizing the synergistic effect of thiosulfate and sodium sulfide to form stable HgS sediment; the sediment and desulfurization gypsum enter a solid phase together and are separated and removed. Meanwhile, the inhibitor disclosed by the invention is suitable for being added under the operating conditions of a wet desulfurization system, so that the waste of the additive is reduced. By the inhibitor, the re-release of the mercury in the limestone-gypsum wet flue gas desulfurization slurry can be inhibited effectively, the demercuration efficiency of a limestone-gypsum wet flue gas desulfurization system can be improved, and the problem of mercury pollution caused by coal-fired flue gas emissions can be solved effectively.

The invention provides a method for reducing consumption of thiosulfate in a gold leaching system. According to the method, the additive is humic acid extracted from coal and adopting fulvic acid , and humin acid as main components; during application, the humic acid is added into a copper-ammonia-thiosulfate system, wherein the adding amount of the humic acid is in the range of 20-120 mg / dm3, preferably 80mg / L, the copper-ammonia-thiosulfate system comprises 0.01-0.05mol / dm<3> of copper (II) ion, 0.3-2mol / dm <3> of aqua ammonia and 0.3-1mol / dm <3> of thiosulfate, and the pH value of pulp is 10-11. By using the leaching solution (namely the copper-ammonia-thiosulfate) to extract gold from ore, the consumption of the thiosulfate can be remarkably reduced on the premise of not affecting the leaching rate of gold.

The invention discloses an acetylene-hydrochlorinated low-content gold compound catalyst, particularly a nonmerculic catalyst which is suitable for synthesis of chloroethylene through an acetylene hydrochlorination reaction. The catalyst comprises carrier active carbon, a main catalysis element and auxiliary elements A and B, wherein the content of the carrier active carbon is 10,000 parts, the main catalysis element is thiosulfate of gold with the content of 1-120 parts, the auxiliary element A is thiosulfate of silver with the content of 50-1,000 parts, the auxiliary element B is alkali metal compound and a mixture of the alkali metal compounds with the content of 50-1,000 parts. According to the acetylene-hydrochlorinated low-content gold compound catalyst disclosed by the invention, the content of gold in the prepared gold compound catalyst is low; the cost of noble metal catalyst is remarkably reduced; the prepared gold compound catalyst is a good-activity, strong-stability and high-selectivity novel nonmerculic catalyst; and the acetylene-hydrochlorinated low-content gold compound catalyst has the advantages of simple production process, short production period and environment-friendliness.

The invention discloses an antibody preparation method through which various organic phosphorus pesticide residues can be detected and the application, which belongs to the technical filed of agriculture. The antibody preparation method adopts the steps that firstly, O,O-diethylthiophosphoryl chloride is used to react with 4-aminobutyric acid to synthesize into general hapten O, O-diethyl-N-(3-carboxy-propyl)-by-sulfur Phosphoramidate DENP which comprises various organic phosphorus pesticide common structures-O, O-diethyl thiosulfate phosphoryl; secondly, the general hapten O, O-diethyl-N-(3-carboxy-propyl)-by-sulfur Phosphoramidate DENP is respectively coupled with bovine serum albumin BSA and chicken ovalbumin OVA by adopting carbodiimide method, to prepare general immunogen DENP-BSA and general coatingen DENP-OVA; and thirdly, multi-clonal antibody is prepared through immunized New Zealand white rabbits, the obtained antibody has obvious specificity to various organic phosphorus pesticides, such as thimet, demeton, disulfoion, omethoate, phoxim and quinalphos and can be used for the immune detection of the organophosphorus pesticides.

The invention relates to a layered adsorbent of wastewater containing thiosulfate and a treatment method thereof, belonging to the technical field of wastewater treatment. The adsorbent of wastewatercontaining thiosulfate is layered double hydroxides (LDHs) and calcined products (CLDH) thereof, and the chemical formula is [M<2+>[1-x]M<3+>x(OH)2]<x+>(A<n->)x / 2.yH2O. By applying the LDHs and the CLDH to the treatment of wastewater containing thiosulfate, the invention enables the layered double hydroxides recovered after the thiosulfate is absorbed to be regenerated by sodium carbonate or sodium hydroxide or used for other applications such as agricultural sulfur-containing compound fertilizer and the like. The layered adsorbent can be used for recovery and the reclamation of the thiosulfate. The invention has good absorption effect of the thiosulfate and regeneration and recycle or direct reclamation of the adsorbent, and can solve the problem of eutrophia of the thiosulfate to soil and water bodies.

The present invention is improved process of extracting manganese form dialozite, and belongs to the field of wet metallurgy of dialozite. The materials include dialozite and sulfuric acid in the weight ratio of 1 to 0.3-0.8, as well as reductant in 1-18 wt% of dialozite and including sulfite, thiosulfate, SO2, iron pyrite, ascorbic acid and hydroxylamine. The process includes the following steps: filtering the acid leachate of dialozite, adding pyrolusite with MgO2 content of 15-90 wt%; ferrous compound eliminating reaction at 40-80 deg.c for over 20 min; and adding alkali, ammonia, lime, sodium carbonate, sodium bicarbonate and sodium hydroxide into the acid leachate of dialozite to regulate pH value to 5.0-8.0. The present invention has the advantages of less pyrolusite consumption,high Mg leaching rate and low Mg content in slag.

The invention discloses a novel process of nickel citrate for catalyzing thiosulfate to leach gold. The novel process is characterized in that the nickel citrate catalysis is used for substituting the traditional copper ammonia catalysis, namely the nickel sulfate and the citric acid (or sodium citrate) are added in the thiosulfate gold leaching pulp to substitute the adding of the copper sulfate and the ammonia. By adopting the process, the oxygenolysis effect of the Cu(NH3)4<2+> and S2O3<2-> is eliminated so that the consumption of the thiosulfate is obviously reduced; and besides, the use of the ammonia is cancelled so as to avoid the risk of the NH3 on the environment. The gold leaching rate is equal to that of the copper ammonia catalysis.

A golf ball comprises a molded core, one or more ionomer mantles, and a thermoset polyurethane cover. The core is a high cis-polybutadiene crosslinked with zinc diacrylate and may also comprise a halogenated thiophenol and metal thiosulfate. One or more of the ionomer mantles comprises an ionomer neutralized to 80% or greater.

A method for forming an image useful as a lithographic printing plate using an ink jet technique is disclosed. An imageable precursor that comprises an overlayer over a substrate is imaged with an imaging agent and developed with water or fountain solution. The overlayer comprises a thiosulfate-containing polymer. The imaging agent is a polar organic liquid comprising at least one functional group selected from hydroxyl, cyano, and lactone. The method retains the advantages of using data in digital form, yet does not require expensive and complex equipment for imaging. The imaged precursor can be developed with water or on press using fountain solution.

The invention belongs to the field of a composite intelligent fluorescent material, and in particular relates to a thermo-sensitive fluorescent carbon nano composite material and a preparation method thereof. The fluorescent material is prepared by the steps of adding N,N-methylene bisacrylamide in an acrylamide water solution, and mixing; adding 0.3-3wt% of a carbon quantum dot solution, 0.5-2.5wt% of a poly N-isopropyl acrylamide solution and tetraethylethylenediamine in mixing liquid, adding an initiator after dissolving, and standing by for 3-8 hours to obtain the fluorescent material. The initiator is either thiosulfate or persulfate. According to the fluorescent material disclosed by the invention, with the addition of the carbon quantum dot, the fluorescence of the composite material is guaranteed, by introducing the N-isopropyl acrylamide, the composite material is thermo-sensitive, and by adding the acrylamide, the mechanical strength of the semi-interpenetrating network structure of the composite material is enhanced; and the composite is free from toxicity, environment-friendly and good in stability; and the thermo-sensitive fluorescent carbon nano composite material is simple in preparation process, low in raw material price, and free from toxicity and pollution in a synthesis process.

The object is to improve rolling resistance properties and controllability / stability. Thus, disclosed is a rubber composition for a side-wall, a clinch or an insulation, which comprises: 100 parts by mass of a diene rubber component; 20 to 60 parts by mass of a filler, 1.0 to 4.0 parts by mass of sulfur, and 0.1 to 10 parts by mass of a vulcanization accelerator aid, wherein the diene rubber component comprises 10 to 70 mass% of at least one diene rubber component (a) selected from the group consisting of a solution-polymerization-modified styrene-butadiene rubber, a tin-modified butadiene rubber and a butadiene rubber modified with a compound represented by the formula (1) at its terminus and 20 to 80 mass% of a diene rubber component (b) that is different from the diene rubber component (a), and wherein the vulcanization accelerator aid is selected from the group consisting of a citraconimide compound, an organic thiosulfate compound, an alkyl phenol-sulfur chloride condensate, a compound represented by the formula (2) and a methacrylic acid metal salt represented by the formula (3).

The invention discloses a method for selective synthesis of an aryl sulfoxide compound (III) and an aryl thioether compound (IV). According to the invention, in a reactive solvent, an aryl high iodinesalt is adopted as the reaction raw material, aryl / alkyl thiosulfate is taken as the vulcanizing reagent, under the catalysis of visible light and a photosensitive reagent, and under the action of lewis acid and alkali, when the reaction atmosphere is nitrogen, the thioether compound (IV) can be generated, and when the reaction atmosphere is air, the sulfoxide compound (III) can be generated. Thesynthesis method provided by the invention has the advantages of easily available and cheap raw materials, simple reaction operation, mild and environment-friendly reaction conditions, high yield, and excellent functional group tolerance. The invention also discloses the new aryl sulfoxide compound (III) and aryl thioether compound (IV), also successfully realizes later modification of drugs andsugar, and realizes the formal synthesis of some drugs, and provides an efficient method for selective construction of thioether and sulfoxide compounds.

The invention relates to a gold extracting method by thiosulfate using a polyamine compound as an additive, which comprises the steps: after ores are crushed and wet-ground until the fineness is over 90 percent of -200 meshes, 0.03-3mol / dm3 thiosulfate is added to be used as a leaching agent, and then 0.0015-0.09mol / dm3 polyamine compound and 0.0015-0.03mol / dm3 copper (II) ion are added to form a complex ion to be used as an additive to be stirred and leached; and after gold ores are leached, gold from a leaching solution is recovered. The leaching solution is used to extract gold from the ores, so that the gold leaching rate is high, the process operation is simple, the control is easy, the consumption of thiosulfate is extremely low, and the compositions of the gold leaching solution are simple and are favorable for the recovery of the gold; and the application range is wide, the leaching effect is good when the pH value is between 10 and 12, the leaching speed is quick for copper-containing, carbon-containing and other refractory gold ores, quite high gold leaching rate can be maintained, and sodium cyanide and other toxic substances are not used and toxic waste is not discharged in the whole gold extraction process, so the environment is protected.

Precious metal recovery by thiosulfate leaching where thiosulfate lixiviant is generated in situ employing elemental sulfur generated from partial oxidation of sulfidic precious metal-bearing feed and / or employing reactants from processing effluent.

The invention relates to a method for separating Aeromonas molluscorum producing tetrodotoxin from Takifugu fasciatus tissues and a fermentation culture method of the Aeromonas molluscorum as well as a detection method of the produced tetrodotoxin. The method for separating the Aeromonas molluscorum producing the tetrodotoxin from the Takifugu fasciatus tissues comprises a bacteria separation method, a bacteria identification method, a bacteria fermentation culture method, a competitiveness ELISA (Enzyme Linked Immunosorbent Assay) detection method and an LC-MS (Liquid Chromatograph-mass Spectrometry) detection method of the tetrodotoxin produced by the Aeromonas molluscorum, and the like. In the invention, by separating bacteria from Takifugu fasciatus ovaries and adopting a TCBS (Thiosulfate Citrate Bile (salt) Sucrose (agar)) culture medium for screening, the Aeromonas molluscorum capable of producing the tetrodotoxin is separated from blowfish bodies for the first time; the separated bacteria is identified by adopting a 16 SrDNA method; the competitiveness ELISA detection method and the LC-MS detection method are both firstly adopted for the tetrodotoxin produced by the separated Aeromonas molluscorum; and the produced tetrodotoxin and tetrodotoxin extracted from the blowfish bodies are determined to be the same substance; in addition, the separated Aeromonas molluscorum can massively separate the tetrodotoxin from the bacteria after being cultured.

The invention discloses a method for producing aluminum oxide by high sulfur bauxite, which comprises the processes of raw material preparation, high-pressure digestion, settling separation and washing, aluminum hydroxide seed decomposition, aluminum hydroxide washing and calcination, and mother liquor evaporation. The high-pressure digestion process comprises a low-temperature section, a medium-temperature section and a high-temperature section; compressed air is fed into a high-temperature section reaction kettle in the high-pressure digestion process, so as to finally oxidize S2- in pulp into SO42-; and SO42- is combined in sodium-silicon slag in red mud and discharged with the red mud. By adopting the technical scheme, the concentration of negative bivalent sulfur in dissolution pulp liquid phase is obviously reduced, the concentration of thiosulfate in the dissolution pulp liquid phase is not increased obviously, the concentrations of negative bivalent sulfur and ferric oxide in circulating mother liquor are obviously reduced, the concentration of negative bivalent sulfur in fine liquor is obviously reduced, the concentration of thiosulfate is not increased obviously, the content of ferric oxide in the fine liquor is reduced, the contents of ferric oxide in aluminum hydroxide and aluminum oxide meet the primary standard of the national standard, and all production links return to normal.

There is provided a rubber composition for a bead apex which can enhance extrusion processability by optimizing a rate of vulcanization during a vulcanization process, and can improve rigidity, steering stability and a low fuel consumption property, a tire having a bead apex prepared by using the rubber composition for a bead apex and being capable of enhancing steering stability and reducing rolling resistance and a tire for a sports utility vehicle (SUV) having further enhanced durability. The rubber composition for a bead apex comprises a diene rubber, a phenol resin and / or a modified phenol resin, sulfur, hexamethylenetetramine, a vulcanization accelerator, and at least one kind of vulcanization acceleration auxiliary selected from the group consisting of a citraconimide compound, a condensate of alkyl phenol and sulfur chloride, an organic thiosulfate compound and a compound represented by the general formula: R1—S—S-A-S—S—R2.

The invention discloses a remediation agent for heavy metal contaminated soil and a preparation method of the remediation agent. The remediation agent for the heavy metal contaminated soil is prepared from the following components in percentage by weight: 35 to 55 percent of biochar, 10 to 20 percent of sepiolite, 5 to 10 percent of water-soluble solid organic acid, 5 to 10 percent of monocalcium phosphate, 10 to 20 percent of thiosulfate, and the balance of natural gypsum. The preparation method of the remediation agent for the heavy metal contaminated soil comprises the following steps: preparing the biochar; grinding the prepared biochar, the sepiolite, the water-soluble solid organic acid, the monocalcium phosphate, the thiosulfate and the natural gypsum into particles of which the particle sizes are smaller than or equal to 2mm according to the weight percent, and sufficiently mixing. The remediation agent for the heavy metal contaminated soil, disclosed by the invention, can be used for passivating heavy metals such as mercury, cadmium, lead, chromium and arsenic, and adsorbing and thoroughly degrading organic pollutants in the soil.