7299 results about "Copper sulfate" patented technology

Recombinant Factor VIII can be produced in relatively large quantities on a continuous basis from mammalian cells in the absence of any animal-derived proteins such as albumin by culturing the cells in a protein free medium supplemented with polyol copolymers, preferably in the presence of trace metals such as copper. In very preferred embodiments, the medium includes a polyglycol known as Pluronic F-68, copper sulfate, ferrous sulfate / EDTA complex, and salts of trace metals such as manganese, molybdenum, silicon, lithium and chromium. With an alternative medium which included trace copper ions alone (without polyol copolymers) we were also able to enhance the productivity of Factor VIII in recombinant cells such as BHK cells that are genetically engineered to express Factor VIII.

The invention provides a plant nutrient solution for soilless culture of tomato. The plant nutrient solution is prepared by the following raw materials in part by weight: 2 to 4 parts of potassium nitrate, 3 to 8 parts of calcium nitrate, 1 to 5 parts of magnesium sulfate, 1 to 3 parts of potassium phosphate, 1 to 2 parts of potassium sulphate, 1 to 2 parts of monopotassium phosphate, 0.1 to 0.15 part of Na2-EDTA, 0.05 to 0.1 part of Fe-EDTA, 0.01 to 0.05 part of molybdic acid, 0.01 to 0.03 part of manganese sulfate, 0.3 to 0.5 part of sodium tetraborate, 2 to 4 parts of superphosphate, 0.003 to 0.01 part of zinc sulfate, 0.001 to 0.002 part of copper sulfate, 0.001 to 0.003 part of ammonium nitrate, 1 to 3 parts of urea, 1 to 2 parts of organic acid, 0.5 to 1 part of beta cyclodextrin, 0.05 to 0.1 part of vitamin B, 2 to 4 parts of chitosan, 1 to 2 parts of nicotinamide, 0.5 to 2 parts of amino acid, 0.3 to 0.5 part of diethyl aminoethyl hexanoate, 0.02 to 0.5 part of gibberellin, and 5,000 to 7,000 parts of water. According to experiment, the plant nutrient solution provided by the invention can be used for carrying out soilless culture of tomato, and the tomato has high plant height, thick stem, high cluster and high output.

The invention discloses a method for comprehensively recycling valuable metals from a spent lithium ion battery. The method comprises the following steps: carrying out electric discharge treatment on a spent battery, crushing, pre-roasting at 300-400 DEG C, adding a reducing agent, and carrying out reduction roasting at 450-700 DEG C; carrying out water extraction and evaporative crystallization on fine aggregates obtained through the reduction roasting, so as to obtain a high-purity lithium product, leaching copper, nickel and cobalt from leached slag and roasted lump materials by virtue of ammonia oxide, carrying out magnetic separation and sieving on ammonia leaching slag so as to obtain iron and aluminum enriched products, and carrying out reduction acid leaching, purification and edulcoration on sieved products, so as to obtain a high-purity manganese sulfate solution; and carrying out extraction and selective reverse extraction on ammonia leaching liquid, so as to obtain a high-purity nickel sulfate solution and a high-purity copper sulfate solution, and carrying out vulcanization cobalt precipitation, oxidation acid leaching and extraction purification on raffinate, so as to obtain a high-purity cobalt sulfate solution. The method is high in extraction rate of valuable metals and applicable to the treatment of multiple waste lithium ion battery raw materials and efficient utilization of multiple elements, and sorting is not required.

The invention discloses a method for recovering and recycling waste lithium ion battery cathode material, belonging to the fields of lithium ion battery material preparation and recycling use of waste resources. The method has the technical proposal with the key points as follows: the recovered waste batteries are sorted, cathode waste material (after being sorted) which is stripped to remove the shell and generated in the production process of the lithium ion battery is directly crushed and ground, and then processed by the procedures such as aluminum removing, acid dipping, copper extracting, chemical purification and the like under different conditions, so that byproduct materials such as aluminum hydroxide, carbon black, graphite, copper sulphate and the like are generated; reaction products are added with precipitator with certain concentration for liquid-phase precipitation and then added with lithium source, so that cathode material can be generated in the high temperature environment. The technical proposal successfully realizes the valuable constituent recovery and cathode material regeneration of the waste lithium ion battery cathode material.

The present invention is directed to a biocidal water treatment composition, water treatment apparatus, and method of treating water to reduce levels of pathogens. The composition contains sources of copper, zinc, and silver metal ions within a crosslinked polymer matrix. Examples of these ion sources include copper sulfate, zinc sulfate, and silver nitrate. An example of the crosslinked polymer matrix is crosslinked chitosan, which also serves to clarify the water and release the metal ions over time. The product is easy to manufacture, and allows the use of decreased halogen sanitizer, as well as decreased copper ion, thereby decreasing the likelihood of staining. The product simultaneously provides good bactericidal and algaecidal properties, despite low levels of copper ion and low chlorine levels.

A liquid fertilizer containing wood vinegar liquid or oxalic vinegar liquid and its production are disclosed. The liquid fertilizer consists of urea 1í½20.0%, potassium phosphate 1í½20.0%, potassium nitrate 1í½20.0%, lime nitrate 0.1í½10.0%, magnesium sulfate 0.1í½5.0%, ferrous sulfate 0.1í½5.0%, manganous sulfate 0.1í½5.0%, zinc sulfate 0.1í½5.0%, cupric sulfate 0.1í½5.0%, boron sand or boric acid 0.1í½2.0%, sodium molybdate or ammonium molybdate 0.1í½1.0%, plant hormone or plant regulator, rare earth element or humus acid or pesticide auxiliaries etc. The process is carried out by proportioning and mixing. It can improve bacterium inhibiting and plant growth regulating functions.

The invention discloses a high-strength and high-conductivity graphene copper-based composite material and a preparation method thereof, wherein the graphene copper-based composite material comprises 0.01wt.%-6.0wt% of graphene and the balance of copper; the preparation method comprises the following steps: firstly, adding graphene oxide to a copper sulfate solution, adding a hydrazine hydrate solution to reduce nano-copper powder and graphene, drying and then reducing in H2 atmosphere, and finally, preparing the graphene copper-based composite material from the reduced composite powder by use of the Spark Plasma Sintering (SPS) technology. The graphene copper-based composite material shows excellent electric conductivity and thermal conductivity and outstanding wear resistance and corrosion resistance, and thus has a wide application prospect in the field of the frame leads and the electrical contact materials.

The invention relates to a layer foodstuff used for producing health care eggs, consisting of the following components in weight portion: 120 to 160 portions of calcium hydrogen phosphate, 250 to 350 portions of mountain flour, 50 to 60 portions of common salt, 20 to 40 portions of saleratus, 15 to 20 portions of choline, 35 to 40 portions of complex trace elements, 8 to 10 portions of complex vitamins, 10 to 15 portions of lysine, 25 to 30 portions of methionine, 220 to 400 portions of pine needle meal, 1 to 3 portions of bacillus subtilis, 8 to 10 portions of copper sulfate, 2 to 5 portions of phytase, 1 to 5 portions of yeast selenium, 3 to 6 portions of vitamin E, and 250 to 400 portions of Chinese traditional herbal medicine preparation. The invention adds nutritive additives etc. into the foodstuff; therefore the egg laid by the layer contains such beneficial elements as selenium, vitamin E, and is rich in Omega-3 polyunsaturated fatty acid and low in cholesterol.

The invention provides a specialized organic / inorganic composite biological medicine fertilizer for rape, and a preparation method thereof. The weight parts of composition raw materials are as follows: 60-80 parts of greenhouse garbage, 6-7 parts of pericarp, 6-8 parts of cotton straws, 8-10 parts of pig manure, 10-12 parts of plant ash, 10-12 parts of sugar residue, 20-25 parts of sodium humate, 10-11 parts of diammonium phosphate, 12-14 parts of potassium sulfate, 12-14 parts of urea, 12-14 parts of ammonium bicarbonate, 14-16 parts of medical stone, 12-14 parts of animal hair, 1-2 parts of EM strains, 20-22 parts of modified bentonite, 8-10 parts of celastrus orbiculatus, 3-4 parts of neem, 4-6 parts of monkshood, 3-5 parts of fiveleaf akebia fruit, 0.7-1.2 parts of boric acid, 1-1.2 parts of manganese sulfate, 2-4 parts of copper sulfate, 4-6 parts of eucalyptus oil and a proper amount of paraffin. A green organic fertilizer is obtained by mixing a plurality of organic wastes and fermenting the mixture, thereby reducing environment pollutions. The specialized organic / inorganic composite biological medicine fertilizer for the rape has the advantages of comprehensive nutrition and enhanced sterilizing effects by mixing the fermented organic materials and inorganic fertilizer and adding medicine juice of the Chinese herbal medicine having insectidical functions. With the application of the fertilizer, rape quality can be effectively increased; and the rape has green leaves, bright flower, prolonged flowering period, full seeds and increased output.

The invention relates to preparation method and application method of a grape special fertilizer, wherein the preparation method comprises the following steps: preparing an I-type fertilizer by taking the following ingredients in parts by weight: 30-40 parts of urea, 20-30 parts ammonium phosphate, 15-30 parts of potassium sulphate, 1-3 parts of humic acid, 1-3 parts of excrement, 1-5 parts of synergist, 0.1-1.0 part of ferrous sulphate, 0.1-0.8 part of zinc sulfate, 0.1-0.6 part of manganese sulphate, 0.1-0.6 part of borax, 0.1-0.4 part of copper sulfate, 3-7 parts of plaster and 3-13 parts of bentonite; preparing an II-type fertilizer by taking the following ingredients in parts by weight: 7-15 parts of urea, 25-35 parts ammonium phosphate, 35-45 parts of potassium sulphate, 1-3 parts of humic acid, 1-5 parts of excrement, 2-5 parts of synergist, 0.1-1.0 part of ferrous sulphate, 0.1-0.8 part of zinc sulfate, 0.1-0.6 part of manganese sulphate, 0.1-0.6 part of borax, 0.1-0.4 part of copper sulfate, 3-7 parts of plaster and 3-13 parts of bentonite; and blending, spraying, pelleting and drying at lower temperature to obtain the product. The application method of the fertilizer comprises the following steps: taking an organic fertilizer and the II-type fertilizer as a base fertilizer; applying the I-type fertilizer before blossom, applying the II-type fertilizer in the young fruit development period, and meanwhile, respectively spraying monopotassium phosphate and rare earth mixed liquid once on the leaf surfaces; and spraying calcium nitrate or calcium acetate to enhance the storage resistance property before picking.

The invention provides a method for preparing an organic sustained release fertilizer synergist. The synergist comprises the following components in portion by weight: 25 to 60 portions of organic component, 3 to 15 portions of synergistic component, 10 to 13 portions (solid) and 3.5 to 9 portions (liquid) of sustained release component, 0.5 to 5 portions of trace elements, 18 to 30 portions of inorganic nutrient, and 2 to 7 portions of additive. The synergist is prepared by the method of weighing, mixing, spray granulation and low-temperature drying, wherein the organic component contains 2 to 5 portions of humic acid, 25 to 45 portions of mature garbage or barnyard manure, and 2 to 5 portions of residue of monosodium glutamate and sugar; the synergistic component contains 1 to 3 portions of zeolite, 1 to 5 portions of fly ash, and 2 to 5 portions of synergistic agent; the sustained release component contains 10 to 13 portions of bentonite, 0.02 to 0.1 portion of nitrification inhibitor, and 4 to 8 portions of urease inhibitor (liquid); the trace elements contain 0.1 to 1 portion of zinc sulfate, 0.1 to 1 portion of manganese sulfate, 0.1 to 1 portion of borax, 0.1 to 1 portion of copper sulfate, and 0.1 to 1 portion of ferrous sulfate; the inorganic nutrient contains 6 to 9 portions of urea, 7 to 9 portions of ammonium phosphate, and 5 to 7 portions of potassium sulfate; and the additive contains 2 to 7 portions of plaster. The synergist is suitable for the planting of field crops and forest fruits.

The invention discloses a lead and zinc flotation method to ferreous blende and pyrrhotite typed complex lead zinc silver sulphide ore, mainly comprising lead ore branch flotation which controls the electrochemical conditions of the flotation and the zinc and sulfur flotation separation which controls the electrochemical conditions of the flotation. The invention has the advantages of implementing the lead-zinc sulfur separation by adopting twice branch flotation, carrying out fast flotation to the lead ore by using a novel composite catching agent to the galena and silver ore with easy floating coarse grains under the conditions of higher ore pulp potential and low pH; the normal flotation of the lead ore with difficultly floated fine grains is carried out under the conditions of lower ore pulp potential and high pH. The pH of the ore pulp is adjusted to more than 12 by lime for the gangue after the lead is floated; the iron blende is activated by bluestone; the iron blende is recovered by the catching agent with the same type of the lead sulfide floatation, thus leading the property of the lead flotation waste water to be basically consistent with that of the zinc flotation waste water and being beneficial for the circular application of floatation waste water.

The invention relates to a plant nutrient liquid fertilizer. In order to solve the problem of over fertilization, the plant nutrient liquid fertilizer is prepared from the following raw materials in proportion by weight: aqua brassin 12-36, gibberellin 1-4, indoleacetic acid 30-80, abscisic acid 10-20, naphthaleneacetic acid 50-90, salicylic acid 80-180, vitamin C 1-3, cane sugar 40-100, chitin 20-80, 0.05-0.2 percent triacontanol 400-1,000, hydrolyzed protein 2-5, potassium dihydrogen phosphate 300-400, thiourea 40-120, cobalt chloride 5-12, borax 50-100, sodium silicate 30-55, urea 300-500, ammonium molybdate 50-80, copper sulfate 30-65, zinc sulfate 120-200, magnesium sulfate 100-150, calcium chloride 50-120, manganese sulfate 40-80 and water in the amount of 3-8 times the total amount of all the raw materials or water in the amount capable of dissolving all the raw materials, wherein the water is de-ionized water or micro cluster water; and the preparation method is that all the materials are prepared into aqueous solution. The plant nutrient liquid fertilizer has the advantages of favorably solving the problems of over fertilization and shortage of nutrient elements in soil, obviously improving the plant adverse resistance, improving the photosynthesis and the accumulation efficiency of nutritive materials and improving the yield and the quality.

The invention discloses a water-preserving nutrient soil for indoor flowers, which comprises pond sludge, chaff ash, bean curd dross, Attapulgite clay, alta-mud, quartz sand, potassium permanganate, ferrous sulfate, copper sulfate, sulphur, 45% content of azophoska composite fertilizer and high water absorbent resin.

The present invention provides a copper plating solution for embedding fine wiring, wherein it contains copper sulfate at 100 to 300 g / L as copper sulfate pentahydrate, sulfuric acid at 5 to 300 g / L, chlorine at 20 to 200 mg / L, a macromolecular surfactant at 0.05 to 20 g / L for controlling the electrodeposition reaction, sulfur-based saturated organic compound at 1 to 100 mg / L for accelerating the electrodeposition reaction, leveling agent composed of a macromolecular amine compound at 0.01 to 10 mg / L and reductant at 0.025 to 25 g / L for stabilizing the copper plating solution. The copper plating solution of the present invention for embedding fine wiring can plate the wafer surface provided with fine wiring patterns with sub-micron order gaps in-between and coated with copper serving as the metallic seed film, to fill the gaps neither leaving any defect therein nor dissolving the metallic seed film.

A multi-element liquid fertilizer contains active components, additive and water. Its active components includes 13 components, such as potassium sulfate, borax, copper sulfate, manganese sulfate, zinc sulfate, etc.. The additives include 9 components, such as disodium hydrogen phosphate, nitric acid, useful bacteria, useful enzyme, etc.. It can improve the activity of plant cells, change physiological mechanism of plant, increase yield, and make plant robust.

The invention discloses a plant nutrition liquid, which is characterized by the following: comprising potassium nitrate, calcium nitrate, magnesium sulfate, ammonium phosphate, potassium sulfate, monopotassium phosphate and so on a good deal of element; comprising edetate disodium, ferrosi sulfas, boric acid, manganese sulfate, zinc sulfate, copper sulfate, ammonium molybdate and so on microelement; comprising azophoska fertilizer and fertilizer booster; including diverse nutritious element of vegetation development; providing nourishing element for large and medium scale bush and small arbor. This invention also discloses a utility scheme in large and medium scale woody plant soilless culture.

The invention relates to the soiless culture field and in particular relates to a soiless culture nutrient solution; every liter of water comprises the following components by weight: major constituents consisting of 900mg-2200mg of much EM (Effective Microorganisms) probiotics liquid, 900mg-2200mg of brown sugar, 900mg-1000mg of calcium nitrate tetrahydrate, 700mg-900mg of potassium nitrate, 150mg-220mg of ammonium dihydrogen phosphate and 300mg-500mg of magnesium sulfate heptahydrate; micro constituents consisting of 20mg-25mg of EDTA (Ethylene Diamine Tetraacetic Acid) chelated iron, 2mg-3mg of boric acid, 2mg-3mg of manganese sulfate monohydrate, 0.1mg-0.5mg of zinc sulfate heptahydrate, 0.01mg-0.1mg of copper sulfate and 0.01mg-0.08mg of ammonium molybdate tetrahydrate. The soiless culture nutrient solution provided by the invention can be used for improvising the immunity of the soiless culture nutrient solution for resisting plant diseases and insect pests of the crops.

The invention relates to a method for treating organic amine industrial waste water by Fenton-like oxidation-flocculation. According to the method, the pH value of the waste water is adjusted to 3-5, and the temperature of the waste water is adjusted to 20-40 DEG C; a catalyst is added, wherein active ingredients of the catalyst comprise: ferrous sulfate, anhydrous cupric sulphate and manganese sulfate monohydrate, wherein the mass ratio of the ferrous sulfate to the anhydrous cupric sulphate to the manganese sulfate monohydrate is (5-10):1:(0-5); H2O2 (30%) is added, and the oxidation reaction time is 4 hours; after completing the oxidation reaction, sodium hydroxide is added to adjust the pH value of the waste water to 8-10; adding a chemical coagulant and an organic polymer flocculant, such that partial suspended solids, colloids and partial organic amines in the waste water are concurrently coagulated. According to the present invention, the Fenton-like oxidation-flocculation is adopted as the pretreatment for the organic amine waste water, such that the organic amines in the waste water can be effectively removed, the poison and the impact on microorganisms due to the high concentration organic amines in the wastewater can be reduced, the subsequent biological treatment is easily performed for the sewage.

A method to remove chlorine from zinc sulfate solution pertains to nonferrous metallurgy. The chlorine in the zinc sulfate solution is removed through elementary copper in copper slug and Cu2+ generated from oxidation of copper slug react with chloride ion to get insoluble CuCl precipitation. The invention makes a further use of copper slug generated from wet zinc melting method, first partial elementary copper in the copper slug is oxidized and then Cu2+ ion is obtained without adding copper sulfate, realizing the effect that elementary copper and Cu2+ ion are both supplied by the slug to involve in chlorine removal reaction. When in the chlorine removal process, no copper sulfate is added and the copper slug is made a full use, therefore, production cost is reduced, operation process is simplified, no waste slug, waste gas and waste water are added and no pollution is done to the environment and as materials involved in the invention are ordinary materials and are not needed and consumed in a large amount, the invention has remarkable economic effect.

The invention provides a heap-leaching method for separating copper and tin from tin-plated copper wires, belonging to the recovery processing of waste tin-plated copper wires. The method adopting thecopper sulfate replacement / heap-leaching method comprises the following steps: washing and stacking peeled waste tin-plated copper wires on an acid-proof and alkali-proof heap-leaching platform for heap-leaching; pickling the heap-leaching residue with recycling heap-leaching solution, and further washing the pickled heap-leaching residue to obtain detinned copper wires; adding hydrogen peroxideto the heap-leaching solution until no white precipitation is generated, heating the reaction solution until the reaction solution is boiling, standing, filtering, and drying to obtain original stannic acid, and further calcining the original stannic acid to obtain stannic oxide; adding a proper amount of copper powder and blowing air to the filtrate, wherein the addition amount of the copper power is the copper amount required by copper sulfate in the recycling heap-leaching solution; and controlling the temperature and time of the reaction and adjusting the concentrations of copper sulfate and sulfuric acid of the solution by sulfuric acid and water. The method has the advantages that the process is simple and easy-to-operate, the materials and devices are common and cheap, the tin-plated copper wires dispense with stirring in the heap-leaching process, the heap-leaching solution is recyclable and pollution-free, the removal rate of tin is higher than 95%, and the recovery rate of hydrogen peroxide immersion tin is higher than 98%.

The invention discloses regenerated acidic etching solution, a copper recycling method and a special device thereof, belonging to the field of electrochemically recycling waste solution and nonferrous metal. An electrolytic tank in electrochemical treatment is divided into an anode chamber, an intermediate chamber and a cathode chamber. Dilute sulfuric acid solution is contained in the anode chamber, and a lead-tin-calcium alloy plate is adopted as an anode electrolytic plate. Waste acidic etching solution is contained in the intermediate chamber. Copper sulfate solution is contained in the cathode chamber, and a stainless steel plate is adopted as a cathode electrolytic plate. Under the function of an electric field, copper is dissolved out from a copper sulfate system. Water in the anode chamber is oxidized to generate oxygen gas and hydrogen ions. When the concentration of the copper ions is reduced to 1g or lower than 1g, the etching solution can be used anew. The method greatly reduces the production cost and causes no atmospheric pollution at the same time as realizing the recycling.

The invention discloses a water culture nutrient solution prescription of a lettuce and a preparation method of the water culture nutrient solution prescription, and belongs to the technical field of plant soilless culture of the agricultural science. The nutrient solution prescription of the lettuce comprises the following components: a fertilizer A composed of 584.23g / T of calcium nitrate, 421.34g / T of potassium nitrate and 47.8g / T of ammonium nitrate; a fertilizer B composed of 182.4g / T of monopotassium phosphate and, 256.23g / T of magnesium sulfate; a fertilizer C composed of 16.8g / T of FeEDTA (Ethylene Diamine Tetraacetic Acid), 3g / T of boric acid, 2g / T of manganese sulfate, 0.25g / T of zinc sulfate, 0.85g / T of copper sulfate, and 0.38g / T of ammonium molybdate; hormone composed of 0.1g / T indolebutyric acid of or 0.1g / T of naphthylacetic acid; a bactericide composed of 15g / T of carbendazim; and nutrient solution pH (Potential Of Hydrogen) adjusting acid composed of 200ml / T of phosphoric acid or 150g / T of citric acid. The prescription is nutritionally balanced, so that the demand of the lettuce to nutrition can be met, the amount of used nutrient elements is decreased at the same time, the output of the lettuce is increased, and the fertilizers are saved; and the prescription effectively decreases the contents of nitrates in the lettuce under the water culture, improves the quality of the lettuce, enables the simplification of the complicated processes in preparation based on the demand of the actual operation, and is suitable for being used for meeting the requirements of industrialization production.

The invention discloses an antitranspirant foliar fertilizer and a preparation method thereof. The antitranspirant foliar fertilizer comprises the raw materials of copper sulfate, ethylene diamine tetraacetic acid, monopotassium phosphate, zinc sulfate, ferrous sulphate, manganese sulphate, ammonium molybdate, composite rare earth, boric acid, sodium dodecyl sulphonate, urea, fulvic acid, hexanoic acid 2-(diethylamino) ethyl ester, compound amino acid, magnesium sulfate, calcium nitrate, ethylene diamine tetraacetic acid, microbial agent, azone and ammonia water. The antitranspirant foliar fertilizer provides nutrient elements and microbial agents which are required by the growth of plants, the rare earth and amino acid and other beneficial elements, can promote the growth of the plants, improve the yield, the quality, the stress resistance of the plants and the absorbing and operating capabilities on trace elements, simultaneously can effectively reduce the transpiration of the plants and is applied to afforesting in arid regions.

The invention discloses a technology of enhanced-dispersion partial selective and bulk flotation of lead and zinc sulfide ores under low and high alkalinity. During grading of the lead and zinc sulfide ores, sodium hexametahposphate is taken as a dispersion agent and directly added into a ball mill, the ores are ground till the ores with the size of 0.074mm account for 67%-70%, lime is taken as an adjusting agent, zinc sulfate and sodium sulfite are taken as inhibitors, dithiophosphate BA and diethyldithiocarbamate are taken as collectors, and selective flotation of part of lead minerals with good floatability can be performed under low alkalinity; then xanthate and the diethyldithiocarbamate are taken as collectors, and the flotation of the lead minerals is further performed under high alkalinity; copper sulfate is added in lead flotation tailings for activation, butyl xanthate is further taken as the collector for flotation of zinc blende and part of pyrite, and zinc-sulfur separation flotation is further performed on zinc-sulfur mixed concentrate; and sulfuric acid is added in zinc flotation tailings for activation, and the xanthate is taken as the collector for flotation of the remaining pyrite. By adopting the technology, the lead-silver recovery rate can be improved, the using amount of lime and sulfuric acid can be reduced, the circulating amount of middlings can be reduced, the ore dressing cost can be reduced and the grade of the concentrate can be improved.

The invention relates to the technical field of PCB (printed circuit board) plating, in particular to a copper plating solution for PCB through holes and PCB blind holes, and a preparation method and a plating method of the copper plating solution. Each liter of the copper plating solution comprises the following components according to contents: 100-250g of copper sulfate pentahydrate, 100-200g of sulfuric acid, 30-100ppm of chlorine ions, 5-50g of brightener, 3-30g of carrier, 2-20g of leveling agent and the balance of deionized water, wherein the concentration ratio of the copper sulfate pentahydrate to the sulfuric acid is (1-1.25) : 1. The plating method comprises the following steps: putting a PCB with through holes and blind holes into a plating bath with the copper plating solution; plating during air agitation to obtain a copper plating layer. The copper plating layer formed by the plating method has a good deep plating capability as high as 92% above, has a hole-filling rate as high as 96% above, and is dense, smooth, relatively good in malleability, good in gloss, high in toughness and low in internal stress.

A feed additive for relaxing the hot stress reaction of milk cow in the summer is prepared from organochromium, cultured yeast, nicotinic acid, VA, VD, VE, sodium selenite (or yeast selenium), copper sulfate, zinc sulfate, cobalt sulfate, calcium iodate, manganese sulfate, etc.

The invention relates to an organic water soluble fertilizer, which belongs to a novel, efficient and organic hyperconcentration chelate fertilizer and is prepared from plant source organic matters, potassium humate, citric acid, amino acid, vitamin, monosaccharide, fructose, dextrose, polysaccharide, potassium sodium tartrate, zinc sulfate, copper sulfate, manganese sulfate, boracic acid, ammonium molybdate, ethanediol, monoammonium phosphate, monopotassium phosphate, phosphoric acid and the like through the processes of acidification, chelation and concentration. The organic water soluble fertilizer is suitable for being used for all plants in modes of leaf surface spray application, root filling, seed soaking, flushing application, drip irrigation and spray irrigation. The product is nontoxic and does not have hormone or residue, the crop growth and development can be regulated in a balanced way, the metabolism and the photosynthesis of the plants can be promoted, the aging of the plants can be delayed, the quality is improved, the yield is increased, and certain drought resistance, cold resistance and disease resistance effects are realized. 20 percent to 40 percent of soil fertilizer consumption can be reduced through using the organic water soluble fertilizer for many times, and the yield of the crops can be increased by about 10 to 40 percent.