39 results about "Sodium thioglycollate" patented technology

The invention discloses an efficient inhibitor composition for copper-sulfur separation and a copper-sulfur separation flotation method by applying the same. The inhibitor composition (XKY-03) comprises, by mass percentage, 55-70% of sodium humate, 20-35% of potassium permanganate and 5-10% of sodium thioglycollate; and a preparation method of the inhibitor composition (XKY-03) comprises the stepsof taking a beaker as a container at normal temperature and normal pressure, and stirring for 40-50 minutes by a magnetic stirrer. According to the inhibitor composition (XKY-03) prepared by the preparation method, the copper-sulfur separation can be effectively realized, the sulfur-iron ore which is activated by Cu2+ can be inhibited, the grade and the recovery rate of copper in the copper concentrate can be improved, meanwhile, the complexation reaction can occur between the inhibitor composition (XKY-03) and unavoidable ions in the ore pulp such as Cu2+, Pb3+, Fe3+ and the like, so that the concentration of the unavoidable ions in the ore pulp is reduced, and the activation effect of the unavoidable ions on the pyrite ore is reduced; and additionally, the inhibitor composition (XKY-03)further has the characteristics of less use amount, low toxicity and the like, and is suitable for popularization and application.

The invention relates to a reverse flotation method for zinc silicate. The method includes the following steps that sulfuric acid serves as a pH value adjusting agent; acidified sodium silicate and sodium thioglycollate serve as a zinc silicate inhibiting agent; diethyl phthalate serves as a foaming agent; sodium stearate serves as a collecting agent of gangue minerals; in the flotation process, after sulfuric acid is added into ore pulp with monomers separated to adjust the pH value to 4.5 to 5.0, acidified sodium silicate and sodium thioglycollate are added to inhibit zinc silicate; then, diethyl phthalate is added to serve as the foaming agent; sodium stearate is added to serve as the collecting agent of gangue minerals; flotation froth serves as tailings; and zinc silicate concentrate exists in a flotation tank. By means of the reverse flotation method, zinc silicate minerals can be effectively recycled, and zinc silicate concentrate with the zinc concentrate grade being 41-46% and the recycling rate being 90% or higher can be obtained through rough floatation and sweeping flotation under the condition that the grade of feeding ore zinc is 10-18%.

The invention discloses a copper-molybdenum mixed concentrate flotation separation agent system and its application; the copper-molybdenum mixed concentrate flotation separation agent system includes a copper mineral inhibitor and a molybdenum mineral collector in the copper-molybdenum flotation separation process and foaming agents. Wherein, the copper mineral inhibitor includes by weight: 3-7 parts of sodium hydroxide, 3-6 parts of hydrogen peroxide, 15-25 parts of sodium thioglycolate, 2 parts of pentasodium diethylenetriaminepentaacetate -5 parts, an appropriate amount of water; the molybdenum mineral collector includes by weight parts: 20-30 parts of kerosene, 5-10 parts of tert-dodecylmercaptan; the foaming agent is 2-hexanol. The inhibitor and collector of the invention have strong selective adsorption capacity, excellent synergistic performance, strong foaming agent group activity, brittle and dense foam formed, and good mineralization effect. The copper-molybdenum flotation separation agent system of the present invention can greatly improve the difference in floatability between molybdenum minerals and copper minerals in complex and difficult-to-separate copper-molybdenum mixed concentrates, effectively reduce the mutual inclusion of copper and molybdenum, and the separation index is excellent. It is harmless and has little impact on the environment.

The invention provides a production method of high-grade sodium thioglycollate powder. The production method comprises the following steps of firstly, uniformly mixing chloroacetic acid and deionized water according to the mass ratio to obtain a chloroacetic acid solution, then adding sodium carbonate into the chloroacetic acid solution, and uniformly mixing to obtain a sodium chloroacetate solution; secondly, adding sodium thiosulfate into the sodium chloroacetate solution, uniformly mixing and then carrying out temperature-rise condensation to obtain a condensation compound; thirdly, adding sodium hydroxide into the condensation compound, uniformly mixing and then carrying out temperature-reduced mercaptoethylation to obtain a mercaptoethylation product; fourthly, carrying out vacuum drying treatment on the mercaptoethylation product to obtain the high-grade sodium thioglycollate powder. According to the production method provided by the invention, the problems about low grade of products, high transportation expenses, high packing expenses, easiness in oxidation and the like existing the prior art are solved; sodium thioglycollate produced by the production method provided by the invention is in a powder shape and does not generate three wastes; the grade of the product is over 35 percent; the high-grade sodium thioglycollate powder belongs to a green environment-friendly product.

The invention discloses a method for culturing Chlamydomonas reinhardtii by urea plant wastewater. According to the method, urea plant wastewater can be treated in low cost, Chlamydomonas reinhardtii with important economic value can also be obtained, the waste is changed into treasures, harm is turned into a good and many things are achieved at one stroke. A traditional method for culturing Chlamydomonas reinhardtii comprises the step of culturing Chlamydomonas reinhardtii in an open concrete runway pool by virtue of a TAP culture medium, and has the disadvantages of low growth speed, low output, great investment, easy pollution and low efficiency. According to the invention, Chlamydomonas reinhardtii is cultured in a household mineral water bucket to achieve the advantages of low cost, small possibility of pollution, convenience in cleaning, reutilization and convenience in operation; since nutritional ingredients, such as urea plant wastewater, yeast extract powder, sodium deoxycholate, sorbitol, mannitol, sodium thioglycolate, soil extract liquid, sheep manure leachate, chicken manure leachate, L-arginine, potassium dihydrogen phosphate, yeast extract, and diatomite powder are added into the culture medium, and an organic fertilizer is used in combination with an inorganic fertilizer, nutrition is more comprehensive and balanced, the growth rate and yield of Chlamydomonas reinhardtii are substantially increased and the yield is increased by 280%.

The invention belongs to the technical field of microbial culture, and concretely relates to an anaerobic enrichment medium and a preparation method thereof. The medium includes peptone, yeast extract powder, a brain and heart infusion broth, glucose, sodium thioglycolate, hemin, vitamin K1, an anticoagulant, an anaerobic indicator and distilled water; and the medium for promoting mass propagation of anaerobic bacteria can be prepared through a special ratio of the above components. The medium is used to clinically culture anaerobic pathogens in order to improve the positive detection rate of the anaerobic pathogens.