867 results about "Sulphate Ion" patented technology

A process and an apparatus are described for treating seven types of saline waters each having a concentration of total dissolved solids exceeding 1 g/L, wherein the concentration of total dissolved solids, the ratio of the chloride ion concentration to the bicarbonate ion concentration and the ratio of the chloride ion concentration to the sulphate ion concentration of each of the water types are as indicated in Table 1. The process includes the steps of contacting the water with a first reagent comprising a source of calcium ions selected from calcium oxide and calcium hydroxide to form a first solid product which is recovered. The process includes a further step of subjecting at least a portion of the partially processed water to at least partial evaporation so as to promote the formation of a precipitate and a mother liquor. The precipitate is recovered as a second product.

A liquid detergent composition having alkoxylated polyethyleneimine polymer and alkyl or hydroxyalkyl sulphate or sulphonate surfactants to provide improved grease cleaning.

The invention discloses a process for recovering catalyst in synthesizing potassium acetylsulfanilate, which includes steps of: (1) neutralizing mixture containing triethylamine sulphate with base or basic salt, rising the temperature to 70-120 DEG C for distilling triethylamine. (2) removing water of triethylamine received in step (1) to obtain high purity triethylamine. In addition, acid could be added to the mixture of removing triethylamine in step (1) to neutralizing excess base, and gypsum is obtained by filtrating reactive liquid. The excellence of this method is that the process is simple, processing time is short, damage to the device is slight, having no contamination to environment, the retrieving triethylamine have high purity and can be used for synthesizing potassium acetylsulfanilate after removing water, and the byproduct such as gypsum also has some economic benefit

A low grade fluorite and barite flotation separation method uses waterglass as the inhibitor for silicious mineral and calcium carbonate mineral; uses oleic acid as the collector for fluorite and barite; and uses starch, sodium sulphate, hydrochloric acid and sodium hexametaphosphate as the inhibitor for barite mineral. The invention can perform flotation separation of low grade fluorite and barite effectively; under the condition that the given fluorite grade is 33.92%-40.41%, and the barite grade is 34.67%-35.33%, by mixing, flotation and separation, can achieves the fluorite concentrate with grade of above 95% and recovery rate of 75.5%-78.5%, and the barite concentrate with grade of 92.3%-93.27% and recovery rate of 75.2%-79.73%.

A segment-based ammonia flue gas desulfurization process and a device thereof combine traditional absorption towers with a crystallization tower. A regeneration tank is arranged at the outside of the tower. The processes of absorption of SO2, sulfite oxidation, regeneration of desulfurization solution, crystallization of ammonium sulphate and ammonia volatilization are carried out respectively. The process system effectively improves the removal rate of SO2, improves the oxidation of the sulfite, strengthens the crystallization of the ammonium sulphate and reduces the escape of ammonia in outlet smoke. The standard discharge of the smoke can be realized after the smoke is processed by the system. The removal rate of SO2 is above 95 percent. The whole system process is simple and has no secondary pollution. And the by-product ammonium sulphate has high economic value and can be especially configured by enterprises with fixed ammonium sources.

Disclosed herein is a method for removing mercury from a gas stream comprising contacting the gas stream with a getter composition comprising bromine, bromochloride, sulphur bromide, sulphur dichloride or sulphur monochloride and mixtures thereof. In one preferred embodiment the getter composition is adsorbed onto a sorbent. The sorbent may be selected from the group consisting of flyash, limestone, lime, calcium sulphate, calcium sulfite, activated carbon, charcoal, silicate, alumina and mixtures thereof. Preferred is flyash, activated carbon and silica.

The invention relates to a high-efficient combined inhabitor for pyrite in complex sulfide ores and the application method of the inhabitor. The inhabitor comprises calcium superoxide and HA-Na. The inhabitor of the invention can inhibit complex vulcanized iron-bearing minerals selectively, has better inhibition properties for magnetic pyrite, pyrite and arsonopyrite, and is an inhabitor of high selectivity. Compared with the prior inhibitors such as lime, cyanide, bichrome, potassium permanganate, sodium sulfide, sulphite, zinc sulphate and trisodium phosphate, the invention has the advantages of lower use level, good effects, no pollution, and other advantages.

The invention relates to a beneficiation method, in particular to a beneficiation method for separating the polymetallic sulphide ore containing copper, lead, zinc and tin. The method comprises the following steps: (1) carrying out ore grinding on the raw ore before carrying out bulk flotation on copper, lead and sulphur, using diethyl mixed with xanthate as collecting agent of copper and lead mineral, using zinc sulphate and sodium sulfite as inhibitor of zinc mineral; (2) carrying out phase-2 ore grinding and selection; (3) separating copper, lead and sulphur, using sodium sulfite and sodium thiosulfate as the inhibitor of the lead and sulphur mineral, using Z-200 as collecting agent for separation and scavenging and then carrying out lead flotation after the separation and scavenging; (4) carrying out zin flotation on the bulk flotation tailings; and (5) finally, carrying out reselection on the zinc flotation tailings to recover tin. The metalliferous mineral of the invention has the advantages of good separating effect, high metal recovery rate, more complete comprehensive recovery of useful minerals, low cost of medicament, simple method, easy operation and energy conservation.

The invention relates to a preparation method of a modified activated carbon adsorption desulfurizing agent. Cocoa nut activated charcoal serves as a carrier; oxidant, such as concentrated nitric acid, concentrated sulfuric acid or ammonium sulphate and the like, is added for modification; active components, such as copper, silver, nipple, cerium and the like are loaded; the metallic oxide content of active components accounts for 1-20 wt% of activated carbon; the mixture is dried to obtain desulfurizing agent. Compared with the prior art, the preparation method has the characteristics of large sulfur adsorption capacity, high desulfurization precision, convenient reproduction and the like, and can be widely applied to producing ultra clean fuel oil in the petrochemical industry field.

The invention discloses compound amino acid injecta, which contains arginine hydrochloride, histidine monohydrochloride, leucine, isoleucine, lysine hydrochloride and the like; meanwhile, the invention further discloses a preparation method of the compound amino acid injecta (18AA); in the event of ensuring the product quality, the compound amino acid injecta has the characteristics of saving energy and enhancing efficacy; by means of repetitive verification on precision, detection limit, quantitation limit, linear range and the like, a simple, convenient, rapid and reliable method with cleaning verification is ensured; furthermore, the residual quantity of antioxygen, namely sodium hydrogensulfite, in the compound amino acid injecta and sulphate ion generated by degrading sodium hydrogensulfite are detected according to an ion chromatography principle, thus, the amount of the antioxygen charged in the raw material proportioning can be accurately measured, and the stability of the raw material proportioning process is judged according to the measurement result; and a detection method of the compound amino acid injecta provided by the invention is an online derivative amino acid content measuring method, the speed is rapid, and the method is applied to large-scale detection.

The invention particularly relates to a maintenance-free lead-acid storage battery and a preparation method thereof. The lead-acid storage battery is prepared from the following anode lead plaster materials: 100kg of lead powder, 1 to 10kg of red lead, 0.02 to 0.15kg of short fiber, 0.02 to 0.15kg of teflon, 0.01 to 0.2kg of stannous mono-sulphate, 0.01 to 0.2kg of antimonous oxide, 6 to 14 weight percent of deionized water, and 5 to 12 weight percent of dilute sulphuric acid, and the following cathode lead plaster materials: 100kg of lead powder, 0.02 to 0.15kg of short fiber, 0.05 to 0.4kg of acetylene black, 0.1 to 1kg of barium sulfate, 0.05 to 0.4kg of lignin, 0.05 to 0.4kg of humic acid, 6 to 14 weight percent of deionized water, and 5 to 12 weight percent of dilute sulphuric acid. The storage battery provided by the invention has good heavy-load discharge performance.

The invention relates to the technical field of lithium ion batteries, in particular to an electrolyte suitable for a silicon-carbon negative electrode lithium ion battery and the silicon-carbon negative electrode lithium ion battery. The electrolyte suitable for the lithium ion battery is prepared from a non-aqueous organic solvent, lithium salt and additives. The additives comprise fluoroethylene carbonate, tris(trimethylsilyl) borate and a sulphate compound with the formula (1) or the formula (2). Compared with the prior art, under the synergistic effect of the three additives in combined use, the capability of changing and controlling SEI composition and stability is achieved, the overall impedance of a formed SEI film is small, and the components and the structure of the SEI film are stable, so that the reversible capacity of the silicon-carbon negative electrode lithium ion battery is greatly increased, the actual discharge capability of the silicon-carbon negative electrode lithium ion battery is greatly improved, then the battery has good cycle performance and good high-and-low temperature performance, and it is guaranteed that the battery can be used within a wide ambient temperature range.

Reactive navy blue RGB azo dye and a preparation process thereof are disclosed, and the structural formula showed as right formula, wherein R1=H, SO3H, OCH3, CH3, C2H5, OC2H5, and M=Na, K. The compound is prepared through coupling H acid with diazonium salt of sulphate ethyl sulphone aniline compound which comprises sulfonic acid group or methyl group, methoxyl group, ethyl group and ethoxyl group. The dye is suitable to be used on the dying, direct printing and discharge of cotton fiber, and has the advantages of evenly coloring, bright color, excellent fastness, favorable lifting power, high color yield and extreme high fixation yield.

The invention relates to an organic and inorganic compound fertilizer specially used for tea trees and a preparation method thereof. The organic and inorganic compound fertilizer is prepared from the following raw materials by weight portion: 40-70 portions of fermented organic fertilizer, 3-15 portions of carbamide, 10-30 portions of ammonium sulfate, 5-25 portions of diammonium phosphate and 5-15 portions of potassium sulphate, wherein the fermented organic fertilizer is prepared by taking 45-65 portions of furfural residues, 20-35 portions of fuming slag and 10-20 portions of weathered coal as raw materials and adding 1-2 portions of microbial fermentation agent EM compound microbial agents to be accumulated and fermented and then dried until the moisture content is 25-35 percent. The organic and inorganic compound fertilizer specially used for the tea trees has long-time fertilizer effect, thereby increasing the fertilizing times; and in addition, the organic and inorganic compound fertilizer specially used for the tea trees has reasonable nutrient proportion, thereby enhancing the tea-leaf yield.

This invention relates to a kind of coated fertilizer specially for fruit trees, which comprises 25~35 shares of urea, 20~30 shares of calcium superphosphate, 23~33 shares of fertilizer of calcium and magnesium phosphate, 6~9 shares of potassium sulphate, 0.7~1.8 shares of ferrite sulphate, 0.7~1.8 shares of borax, 0.7~1.8 shares of manganese sulphate, 0.7~1.8 shares of copper sulphate, 0.2~3 shares of zincum sulphate, 0.7~1.8 shares of ammonium molybdate and paraffin coating materials weighing 4~10% of the total mass of the raw materials above mentioned. For preparation, copper sulphate, ferrite sulphate, zincum sulphate and manganese sulphate are pulverized. Half of the fertilizer of calcium and magnesium phosphate is mixed copper sulphate, ferrite sulphate, borax and manganese and stirred, and the rest raw materials are then mixed and stirred. The homogeneously stirred materials are spindly particles due to a ball-like mechanism and paraffin weighing 4~10% of the fertilizer is melted and used for coating with a coating machine. This invention has the advantages of low fertilizer cost, long fertility persistence, simple production and small investment. The fertility can be effective for as long as one year and by continuous fertilization for two to three years, no fertility shortage will be observed even if stopping fertilization in the following year.

A process for the extraction of a metal from an ore or concentrate comprises subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic solution containing halogen ions and a source of bisulphate or sulphate ions, such as H2SO4. The metals which can be extracted by the process comprises copper as well as non-cuprous metals such as zinc, nickel and cobalt. During pressure oxidation the metal may be precipitated as an insoluble basic salt, such as basic copper sulphate, or substantially completely solubilized and precipitated later as the basic metal salt.

The invention relates to the field of biological fermentation and in particular relates to an origin fermentation method and an origin fermentation product prepared by the same. The origin fermentation method comprises the following steps: acquiring fresh leaves, pulping and crushing to obtain a leaf slurry; placing the leaf slurry into a fermentation tank, adding sterilized ammonium sulphate, ammonium dihydrogen phosphate, ammonium hydrogen carbonate and an aqueous solution of corn steep liquor dry powder into a fermentation tank so as to be fermented; carrying out cell breakage, ultrafiltration, low-temperature drying and concentrating on a fermentation product, and packaging, so that the origin fermentation product is obtained. The origin fermentation method provided by the invention has the advantages that fresh leaves are crushed, bacteria and enzymes carried by the leaves are directly utilized for carrying out fermentation, no organic solvent, saccharifying enzyme or yeast is added in a fermentation process, the fermentation time is short, main ingredients of the obtained origin fermentation product are active substances beneficial to skin, such as micromolecule plant proteins, plant growth factors, plant activity auxin and part of cell growth factors, and the quality of the obtained origin fermentation product is high.

The invention discloses a composite porous activated carbon flue gas adsorbent which is characterized by comprising the following raw materials in parts by weight: 98-105 parts of shell activated carbon, 36-40 parts of diatomite, 2-3 parts of sodium metasilicate, 2-3 parts of rosin, 2-3 parts of VAE emulsion, 2-3 parts of polyvinyl alcohol, 1-2 parts of sodium alcohol ether sulphate, 1-2 parts of sodium citrate, 1-2 parts of gypsum residue, 2.5-3.5 parts of pulverized fuel ash, 4-5 parts of edible corn starch, 2-3 parts of lanthanum nitrate, 9-12 parts of glass fiber powder, 4-6 parts of adsorption aids and a proper amount of water. The composite porous activated carbon flue gas adsorbent disclosed by the invention is reasonable in formula, viscous matters such as polyvinyl alcohol and edible corn starch are added, the toughness and strength of the activated carbon are improved, and the service life is prolonged; and due to the addition of the adsorption aids, the adsorbent has special porosity, the contact time between gas and the adsorbent is prolonged, and the effects of inhibiting bacteria and purifying the air are achieved. Therefore, the adsorption efficiency is high, the production process is simple, and the adsorbent is suitable for industrial dry desulfurization, automobile exhaust desulfurization and daily air purification.

The invention provides a test method of the sulphate content of desulfurization gypsum, comprising the following steps: 3-5 grams of gypsum samples are taken to be heated and dried for 30-60 minutes in a baking oven with the temperature of 42-48 DEG C and then placed into a drier to be cooled to room temperature and weighed by a 1/10000 level balance, the gypsum samples are repeatedly heated and weighed till the gypsum samples have constant weight, and the weight W (g) of the gypsum samples is recorded; the gypsum samples are placed back to the baking oven to be heated and dried for 30-60 minutes under the temperature of 350-370 DEG C and then placed into the drier to be cooled to the room temperature and weighed by the 1/10000 level balance, the gypsum samples are repeatedly heated and weighed till the gypsum samples have constant weight, and the weight W1 (g) of the gypsum samples is recorded; the computation of the crystallization water content of the gypsum samples is as follows: the crystallization water content X(%)=(W-W1)*100/W, and the computation of the sulphate content of the gypsum samples is as follows: the sulphate content is indicated by calcium sulphate dehydrate content, CaSO4.2H2O(%)=X*100/20.9275. The method is simple, convenient and fast; and in addition, compared with the prior art, the invention greatly enhances the analysis speed, simplifies the analysis steps and decreases the experimental apparatus.

The invention provides a method for recycling ammonium salt from chemical waste liquor generated in the desulfurization/decyanation process of coke oven gas, and particularly, the invention provides a method for extracting high-purity ammonium thiocyanate and ammonium sulphate from coking desulfurization/decyanation waste liquor. The purities of ammonium thiocyanate and ammonium sulphate produced by using the method disclosed by the invention are greatly improved in comparison with those of products produced by contrasted embodiments. According to the method disclosed by the invention, high-purity products can be prepared under the condition of only carrying out one-time step-by-step concentration, so that the wastewater discharge amount is reduced and the environment pollution of coking plants is alleviated; and high-purity and high-added-value chemical raw materials are recycled, thereby increasing the economic benefits of enterprises.

The invention belongs to the field of marine medicines, and relates to a fucosan sulphate, a preparation method thereof and application of the fucosan sulphate in preparing an anti-influenza virus medicine. Polysaccharide with a main chain taking alpha-1,2-D-mannose and beta-1,4-D-glucuronic acid as repetitive units, and with a branched chain of alpha-1,3-L-fucosan sulphate is obtained by virtue of hot-water extraction, calcium chloride precipitation and DEAE-Cellulose chromatographic column purification. The fucosan sulphate prepared by the invention is high in inhibition effect on the influenza virus neuraminidase activities of A H1N1, H5N1 and H3N2, and obvious in protection effect on the dog kidney epithelial cells infected by A H1N1. The fucosan sulphate provided by the invention has the advantages of being rich in raw material source, simple in preparation process, easy to industrialize, high in product water solubility, high in stability, free from toxic and side effects, and the like, and has the prospect of being developed to the anti-influenza virus medicine.

The invention discloses a composite oxidant SCR (Selective Catalytic Reduction) denitrating catalyst for warm fume in boilers, a preparation method and application thereof. The catalyst comprises the components of transition metal element M and Ti element. As counted by the oxidant, the amount of the transition metal element M accounts for 6.8-20wt% of the total weight of the catalyst. As counted by TiO2, the amount of Ti accounts for 80-93.2wt% of the total weight of the catalyst. Compared with the widely used commercial catalyst, the catalyst decreases the cost by more than 20%, does not contain W, Mo, V and Ce, and has the advantages of low cost, no toxicity, high activity, good sulphate resisting property and the like.

A liquid detergent composition having mid-branched amine oxides and C₁₀-C₁₄ alkyl or hydroxyalkyl sulphate or sulphonate surfactants to provide improved low temperature grease cleaning.