56 results about "Inorganic sulfate" patented technology

The invention discloses a preparation method of calcium sulfate hemihydrate crystal whiskers high in length diameter ratio. The method includes firstly subjecting soluble inorganic calcium salt and inorganic sulfate to coprecipitation at the temperature of 10-90 DEG C, activating for 1-6 hours at the temperature of 40-150 DEG C to obtain a precursor after filtering and washing, adding the precursor into a hydrothermal medium with crystal form control agent for hydrothermal treatment for 2-10 hours at the temperature of 80-180 DEG C, washing, filtering and drying hydrothermal products, and then obtaining calcium sulfate hemihydrate crystal whiskers in the diameter of 0.1-4 micrometers, the length of 20-3000 micrometers and the length diameter ratio of 50-1000, uniform in shape and identical in size. The preparation method is simple, mild in conditions and low in cost of materials which are easy to obtain, and is easy to industrially popularize. The main content of the calcium sulfate hemihydrate crystal whiskers prepared by the preparation method is larger than 98%, and the calcium sulfate hemihydrate crystal whiskers are uniform in shape and diameter and high in additional value and can be expectedly used as high-performance reinforcing materials for the industries of ceramics, plastics, rubber and paper making and the like.

The invention provides a compound blockage relieving agent, which comprises an A agent, a B agent and a C agent. The A agent is chlorine dioxide solution, and is chlorite or chlorate; the B agent is in a non-acid solid active agent system, and comprises organic oisocyanuric acid salt, inorganic sulfate and chlorate; and the C agent is an organic inhibitor for resisting oxidation corrosion of chlorine dioxide, and is organic phosphine. A using method comprises the following steps: the compound blockage relieving agent which is generated through fast activation aboveground and is based on the chlorine dioxide is wholly injected into an oil well formation fin one step through a bushing, then water is injected through the bushing, the chlorine dioxide compound blockage relieving agent with higher concentration after being activated is extruded into a perforation section, polymer of an oil layer is in oxidative degradation, and various bacterial microorganisms bred by raw oil and sulfide are oxidized and completely killed, thereby the invention achieves the purpose of eliminating blockage, has the characteristic that faint yellow liquid based on the chlorine dioxide of high concentration is generated through the fast activation, has no large quantity of chlorine dioxide gas escape, and can be widely used for fields such as oil well blockage relieving, water well blockage relieving, and the like.

The invention discloses an efficient wastewater treatment agent which comprises the following components: 40-60 parts of inorganic natural mineral substances, 20-40 parts of inorganic sulfate, 10-30 parts of inorganic carbonate or alkali, and 1-5 parts of inorganic polymeric sulfate. The efficient wastewater treatment agent is neutral, the application of the efficient wastewater treatment agent does not affect the pH value of an aqueous solution, and the application of the efficient wastewater treatment agent is not affected by the pH value of wastewater required to be treated, therefore, the efficient wastewater treatment agent is easy to use; indexes of SS (suspended solids), COD (chemical oxygen demand), BOD (biological oxygen demand), total phosphorus, total nitrogen, and the like in eutrophic water can be greatly reduced, and settled flocculates are coagulated, changed from hydrophilicity to hydrophobicity, and not dissolved in water again.

The surface modifier for concrete aggregate consists of inorganic sulfate coagulating agent 0.06-0.1 wt%, inorganic sulfate coagulant 1.25-2 wt%, and organic sodium methyl silicate 2.5-4 wt%. The surface modifier can lower the water absorption of high hydroscopicity aggregate, with includes regenerated aggregate, artificial light aggregate, etc. The surface modifier may be sprayed or soaked onto high hydroscopicity aggregate for surface modification, and has low cost, no pollution and high surface modifying effect.

An aqueous precipitation process for the preparation of particles comprising primarily silver sulfate, comprising reacting an aqueous soluble silver salt and an aqueous soluble source of inorganic sulfate ion in an agitated precipitation reactor vessel and precipitating particles comprising primarily silver sulfate, wherein the reaction and precipitation are performed in the presence of an aqueous soluble carboxylic acid additive or salt thereof, the amount of additive being a minor molar percentage, relative to the molar amount of silver sulfate precipitated, and effective to result in precipitation of particles comprising primarily silver sulfate having a mean grain-size of less than 70 micrometers.

The invention discloses a low-corrosivity dialkyl phosphinate composition and application thereof. Raw materials of the corrosivity dialkyl phosphinate composition comprise, in percentage by weight, 99-99.999 wt% of dialkyl phosphinate mixture and 0.001-1 wt% of sulfate; the dialkyl phosphinate mixture at least comprises diethyl phosphinate; and the sulfate is selected from inorganic sulfate. Whenthe low-corrosivity dialkyl phosphinate composition is used individually or used in cooperation with other flame retardants, a polymer degrading effect can be reduced, and equipment corrosion is reduced.

The invention provides a fermenting culture medium of bacillus. The fermenting culture medium comprises 30 to 80g/L of nitrogen source, 80 to 120g/L of carbon source, 1 to 4g/L of inorganic phosphate,and 1.5 to 5g/L of inorganic sulfate, wherein the carbon source comprises 60 to 100g/L of feeding carbon source. Compared with the prior art, the fermenting culture medium has the advantage that by adjusting the carbon and nitrogen ratio in the fermenting culture medium, the concentration of the bacillus is increased, the total amount of product is increased, and the content of solid in the fermenting process is increased.

The present invention pertains: to a particulate water treatment agent for the environment, for eliminating a harmful substance, and characterized by resulting in a granulated form by adding pure water to a composition configured from iron powder, magnesia, and an acidic inorganic sulfate salt; and a method that is for treating water polluted by harmful substances and that is characterized by bringing into contact polluted water containing harmful substances and the particulate water treatment agent for the environment.

The present invention relates to a novel inorganic sulfate ion scavenger that is environmentally friendly and has high performance. With regard to the inorganic sulfate ion scavenger of the present invention, the amount of ionic impurities leaching out in pure water is no greater than 500 ppm and the amount of sulfate ion leaching out in pure water is no greater than 30 ppm. Furthermore, the present invention relates to an inorganic scavenging composition comprising the inorganic scavenger, and to an electronic component-sealing resin composition, an electronic component-sealing material, an electronic component, a varnish, an adhesive, a paste, and a product employing the inorganic scavenger or the inorganic scavenging composition.

The present invention is a powder cleaning agent composition containing (a) an anionic surfactant, (b) a carboxylic acid whereof the primary acid dissociation constant is between 1 and 5 inclusive, the maximum acid dissociation constant is 7 or lower, and the molecular weight is between 46 and 5,000 inclusive, and (c) one or more species of compounds chosen from among inorganic sulfates and inorganic halogenated compounds, each in a predetermined range. The powder cleaning agent composition has a content of 10% or less by mass in inorganic carbonate whereof the solubility is 0.1 g or greater in 100 g of water at 20 degrees centigrade. The powder cleaning agent composition contains, in a specific mass ratio and serving as (a), a specific alkyl sulfate ester salt and one or more species chosen from among specific polyoxyethylene alkyl sulfate ester salts and specific alkyl benzene sulfonates. The (a)/(b) ratio by mass is between 1 and 40 inclusive. The powder cleaning agent composition has a total content of 4% by mass or less in predetermined protease granulated material and predetermined cellulase granulated material. When the powder cleaning agent composition is diluted 300-fold in water at 20 degrees centigrade, the pH is between 2.5 and 6.5 inclusive.

The invention relates to a microbial agent applied to wax and corrosion prevention of an oil well. The microbial agent comprises 10.0 to 18.0 percent of industrial salt, 2.0 to 4.0 percent of inorganic ammonium salt, 4.0 to 6.0 percent of nitrate, 1.0 to 2.0 percent of inorganic phosphorus salt, 0.5 to 1.0 percent of inorganic sulfate, 8.0 to 12.0 percent of white oil, 5.0 to 10.0 percent of microbial wax-preventing culture, 5.0 to 10.0 percent of denitrifying culture and 37.0 to 64.5 percent of water, wherein the microbial wax-preventing culture comprises pseudomonas, corynebacterium and micrococcus; and the denitrifying culture comprises pseuomonas denitrifican and paracoccus denitrificans. The invention further provides a preparation method of the microbial agent. The microbial agent can control corrosion of the oil well (hydrogen sulfide corrosion generated by sulfate reducing bacteria) while controlling wax precipitation of the oil well, and can avoid various problems caused by the use of the traditional chemical wax cleaning and preventing agent and chemical sterilizer; and the microbial agent is multi-purpose, high in reliability, high in economic benefit, convenient to useand good in effect.

The invention discloses a clean in place (CIP) cleaning composition for milk product, food and beverage equipment, and a CIP method using the cleaning composition, wherein the cleaning composition contains i) about 0.1-4.0 wt% of at least an alkaline source, ii) about 0.01-5.0 wt% of at least a salt selected from an inorganic sulfate, a sulfite and an organic sulfate, and iii) an aqueous medium.

A sunset yellow coagulant for accelerating hydration of beta semi-hydrated gypsum includes a main material and an additive, wherein the main material is sunset yellow. The coagulant includes, by weight, not less than 85% of the sunset yellow, and not more than 15% of the additive comprising one or more of saccharides, starch and inorganic sulfate salt. The components are uniformly mixed and groundto prepare the sunset yellow coagulant. The sunset yellow coagulant can accelerate hydration of the semi-hydrated gypsum. Compared gypsum coagulant in the prior art, the product has the advantages of: 1) the coagulant is free of special process sand can be prepared by purchasing the raw materials on market and compounding the raw materials; 2) the coagulant has good stability and has stable and extensive raw material sources, so that for the gypsum industry, the product is easy to promote and use.

The invention relates to an ammonium nitrate composite antiknock agent, a high nitrogen nitro compound fertilizer and a preparation method of the high nitrogen nitro compound fertilizer. The ammoniumnitrate composite antiknock agent is prepared from the following components: 60-85% of an antiknock agent, 10-20% of a reinforcing agent, 2-10% of a nitrogen-rich agent and 3-10% of a stabilizer, wherein the antiknock agent is chloride; the reinforcing agent is inorganic sulfate; the nitrogen-rich agent is organic nitrogen heterocyclic cyanide and urea; and the stabilizer is an anionic surfactantwith naphthalene rings. The high nitrogen nitro compound fertilizer is prepared from 98.5-99% of ammonium nitrate and 1-1.5% of the ammonium nitrate composite antiknock agent. According to the invention, the particle strength of a product is increased by physical eutectic, and the particle strength of the obtained product is more than 30 N; through a physical eutectic enhancement passivation principle and an intermolecular complex chemical passivation technology, the high nitrogen nitro compound fertilizer product added with the composite antiknock agent is enabled to be stored for six months,and the antiknock performance can still be kept stable.

Sugars comprising the monosaccharides glucose and fructose, and the disaccharides sucrose and mannose are catalytically converted to ethanol at ambient temperature in a sulfate fortified acid medium in the presence of transition metal compounds possessing a degree of symmetry. This is not a fermentation process but is a catalytic chemical process where conversion efficiency is improved by saturating the acidic reaction mixture with inorganic sulfate salts to reduce competitive reactions. Ethanol formed during the reaction may be removed by distillation, following injection of nitric acid, facilitating a continuous process.

The invention discloses an environment-friendly air floatation synergist for treating printing and dyeing wastewater. The environment-friendly air floatation synergist is prepared from, by weight, 10-50 parts of an agent A and 50-90 parts of an agent B, wherein the agent A is prepared from, by weight, 10-40 parts of sodium dodecyl sulfate, 40-70 parts of alpha-olefin sulfonate and 20-50 parts of glycine betaine, and the agent B is prepared from, by weight, 10-40 parts of inorganic chlorine salt and 60-80 parts of inorganic sulfate, wherein inorganic chlorine salt is one or a combination of KCl and NaCl, and inorganic sulfate is one or a combination of K2SO4 and Na2SO4.

The invention relates to a method for leaching uranium-molybdenum associated ore. It uses leaching agent and oxidant to extract uranium and molybdenum in the ore; the leaching agent used is a mixture of water, sulfuric acid, soluble inorganic sulfate or inorganic bisulfate, and the hydrogen ion concentration in the leaching agent is 1.5mol/L~ 5.1mol/L, the amount of soluble inorganic sulfate or inorganic bisulfate is 0.1%-2% (weight) of the ore weight; the leaching method is carried out at 20°C-120°C. The leaching rate of uranium-molybdenum associated ore by the method of the invention is high, the production cost is low, and the resource utilization rate is high. The leaching rate of uranium slag can be increased from 40% to more than 70%, and the leaching rate of molybdenum can be increased from less than 30% to more than 75%. .

The invention discloses micro-nano carbon fertilizer prepared from domestic garbage and a preparation thereof. The fertilizer is characterized by comprising inorganic sulfate (ammonium sulfate, magnesium sulfate and others), and being capable of purifying soil pollution caused by heavy metal including cadmium and others. The electrical conductivity of soil can be improved through a micro-nano carbon material, plants can absorb cadmium and other heavy metal elements from the soil, and therefore soil cadmium pollution can be eliminated. In the preparation process of the micro-nano carbon material prepared from the garbage, the city domestic garbage is burned under an anaerobic condition at low temperature of 650 DEG C to be pyrolyzed, hydrogen (H2) and carbon monoxide (CO) combustible gas are generated, the garbage is thoroughly carbonized, and the amount of formed carbon can reach up to 12-15%. Poisonous gas dioxin, greenhouse gas CO2 and others are not generated. An urease inhibitor and an ammonium stabilizer are added into the fertilizer. The invention first discloses catechol (catechol) as the urease inhibitor screened by China at home and abroad. The emission load of greenhouse gas can be reduced. The effective period of the fertilizer can reach 1-2 years, and the fertilizer is suitable for being applied to field crops and perennial pasture.