Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

4325 results about "Alum" patented technology

An alum (/ˈæləm/) is a type of chemical compound, usually a hydrated double sulfate salt of aluminium with the general formula XAl(SO₄)₂·12H₂O, where X is a monovalent cation such as potassium or ammonium. By itself, "alum" often refers to potassium alum, with the formula KAl(SO₄)₂·12H₂O. Other alums are named after the monovalent ion, such as sodium alum and ammonium alum.

Multiple-effect pollute-removing water purification agent and use method thereof

The invention relates to a multi-effect pollution removal purifying agent and a method for applying the same. The purifying agent is complexly formed by a strong oxidant, an effective adsorbent and an assistant medicament by a weight percentage of strong oxidant 10-80%, effective adsorbent 10-70% and assistant medicament 5-50%. The surface water treatment process of using multi-effect pollution removal purifying agent of the invention comparing with the common flocculants has the following advantages: effectively improving the turbidity removal ratio, increasing the flcos formation amount and alum blossom density for the difficult coagulated surface water, improving the deposition efficiency, oxidizing and removing the organic matters in the water, eliminating the chroma and odor caused by the pollution, increasing the effluent conventional indexes, obviously improving the indexes such as oxygen consumption and ammonia nitrogen, wherein the removal rate of oxygen consumption and ammonia nitrogen can reach 25-60%, the removal rate of small organic molecules, benzenes and phenols can reach more than 80%, playing an obvious roll for the algae inactivation of lake water and reservoir water which are serious eutrophic, improving the algae removal efficiency of the deposition and filtration technologies with an algae removal rate of 80-90%, improving the coagulation efficiency, reducing 20-30% of the common flocculant dosage, effectively adsorbing the codeposition heavy-metal ion. The adding equipment of the invention is easy and convenient to use with little investment and fast effect.
Owner:南通立源水业科技发展有限公司

Method for producing refined lithium sulfate solution used in lepidolite lithium-extracting technique by sulfuric acid process

Provided is a process for producing refined lithium sulfate solution of lepidolite lithium extracting technology with sulfuric acid process, which takes lepidolite clean ore as raw material and sequentially includes the following steps, including leaching, alum cooling and decanting, acid removing, aluminum removing, decontaminating and deliming, thereby achieving refined lithium sulfate solution. The alum cooling and decanting process of the invention can precipitate kalium, rubidium and caesium in alum form, thereby the separation of lithium and kalium, rubidium and caesium is easily achieved, and the achieved alum dregs of kalium, rubidium and caesium are blend alum with high purity, which creates perfect condition for comprehensive utilization and simultaneously reduces the burdens of the separation of lithium and aluminum. The aluminum removing process can easily achieve the separation of lithium and aluminum. The process of the invention has the advantages that the energy consumption is relatively low, and the lithium yield is relatively high, most of the residues can be used and the process is favorable for comprehensive utilization. The invention further provides a process for producing lithium carbonate and lithium fluoride with the achieved refined lithium sulfate solution.
Owner:GANFENG LITHIUM CO LTD

Comprehensive recovery technology of solid waste gas ash and zinc-containing ferrovanadium slag

The invention provides a comprehensive recovery technology of solid waste gas ash and zinc-containing ferrovanadium slag. By combining advantages of low iron content and rich carbon of gas ash and characteristics of high iron content and rich precious metals of ferrovanadium slag, and by the adoption of a rotary-kiln fire method fuming enrichment technology, the material undergoes comprehensive recovery. Advanced equipment such as a waste heat boiler, a negative-pressure bag collector, a pneumatic emulsification desulfurization tower and the like are configured to carry out efficient recovery and harmless environmental-protection processing of flue gas so as to achieve the purpose of clean production. By a beneficiation combined method, iron-containing kiln slag undergoes high added-value exploitation. Thus, the environmental protection problem of resource disposition is solved, and the effect of comprehensive utilization with low energy consumption, high yield and high added-value is achieved. Problems of short kiln age, high energy consumption and low concentration of SO2 during the treating process of ferrovanadium slag can be solved by the technology provided by the invention, and problems of poor iron separation effect and overhigh content of fluorine and chlorine in zinc hypoxide also can be solved. The technology has good economic benefit and high popularization and practical value.
Owner:北京事竟成有色金属研究所

Technique for efficiently removing iron from kaolin

The invention relates to a technique for efficiently removing iron from kaolin by magnetic separation, which is characterized by comprising the following steps: (1) purifying kaolin raw ore to obtain a magnetic separation raw material; (2) adding water to the magnetic separation raw material obtained in the step (1) to prepare a mixed slurry with the solid content of 10-20 wt%, adding sodium hexametaphosphate accounting for 0.2-0.6 wt% of the magnetic separation raw material, slurrying, stirring for 20 minutes, and passing through a 325-mesh wet sieve; (3) carrying out high-gradient magnetic separation on the undersize slurry of the 325-mesh sieve in the step (2): while controlling the magnetic field intensity of the high-gradient magnetic separator at 1.0-1.8T and the slurry flow rate at 0.8-1.8cm/s, the slurry is subjected to magnetic separation by the high-gradient magnetic separator to obtain a concentrate slurry; (4) adding alum accounting for 1-6 wt% of the concentrate slurry into the concentrate slurry obtained in the step (3), flocculating, carrying out pressure filtration, drying, and packaging to obtain a magnetic concentrate; and (5) calcining the magnetic concentrate obtained in the step (4) to obtain the calcined kaolin. The technique has the advantages of high iron removal efficiency and obvious whitening effect.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Microorganism composite flocculant coagulation bacterium application method

ActiveCN103922489ADecomposition Strengthening and AccelerationStrengthen and accelerate degradabilityEnergy based wastewater treatmentOn/in organic carrierMicroorganismSewage
The invention relates to a microorganism composite flocculant coagulation bacterium application method, microorganism composite flocculant and a preparation method of the microorganism composite flocculant, belongs to the technical field of sewage processing, and provides the microorganism composite flocculant coagulation bacterium application method, the microorganism composite flocculant and the preparation method of the microorganism composite flocculant. The microorganism composite flocculant coagulation bacterium application method includes the following steps that firstly, the flocculant is dissolved in water, so that a flocculant solution A is obtained; secondly, engineering bacterium suspension liquid B is prepared, wherein water is added to engineering bacterium powder, and the mixture is stirred to from the engineering bacterium suspension liquid B; thirdly, bacteria are applied through coagulation, wherein the flocculant solution A and the engineering bacterium suspension liquid B are mixed and stirred, so that alum floccules, namely, the microorganism composite flocculant, are obtained, and the alum floccules are sprayed to a target water body. The microorganism composite flocculant obtained through the method is great in bacterium content and has the advantages of being small in work amount, free of energy consumption, toxicity and secondary pollution, capable of rapidly taking effect, high in water ecological restoration speed and the like when used for treating water body pollution.
Owner:SICHUAN QINGHE TECH

Alum-free sweet potato vermicelli capable of invigorating stomach and promoting digestion and preparation technology thereof

The invention discloses alum-free sweet potato vermicelli capable of invigorating stomach and promoting digestion. The alum-free sweet potato vermicelli is characterized by being prepared from the following raw materials in parts by weight: 400-450 parts of sweet potato starch, 20-22 parts of green bean starch, 1.6-2 parts of xanthan gum, 1.2-1.4 parts of composite phosphate, 20-30 parts of carrot, 10-14 parts of tomato, 14-18 parts of hyacinth bean, 15-25 parts of mushroom, 3-5 parts of lilium pollen, 5-7 parts of gelatine powder, 10-14 parts of water caltrop starch, 14-16 parts of polished round-grained rice, 8-10 parts of coloured malt, 6-8 parts of Chinese yam, 5-7 parts of medicated leaven and 7-9 parts of hawthorn. By the method of replacing alum with green bean starch, xanthan gum and composite phosphate for the sweet potato vermicelli, not only can the toughness and elasticity of vermicelli be increased, but also the bar breaking rate of vermicelli in boiling is reduced; the added raw materials including carrot, tomato, hyacinth bean and the like are capable of increasing the nutritional value of vermicelli; the added traditional Chinese medicine components including coloured malt, Chinese yam and the like are capable of enabling the vermicelli to have the health efficacies of invigorating stomach and promoting digestion and the like, and increasing the economic value of the sweet potato vermicelli.
Owner:陈予诺

Composite cementitious material of desulfurated waste residue and mortar prepared from same

The invention relates to the field of building material, and particularly discloses a composite cementitious material of desulfurated waste residue, wherein the composition of the composite cementitious material of desulfurated waste residue comprises ingredients in the following ratios by weight: 25-40% of desulfurated waste residue, 60-75% of industrial chemical gypsum, 0-20% of inorganic mineral additive and 0-2% of chemical additive. The desulfurated waste residue is at least one of dry-process desulfurated ash, wet-process desulfurated gypsum and semidry-process desulfurated ash; the inorganic mineral additive is at least one of cement, fly ash, mineral powder and steel slag; and the chemical additive is at least one of K2SO4, Al2(SO4)3 and alums. The performances such as compressive strength and tensile bond strength of the mortar prepared from the cementitious material are basically the same as the performances of cement mortar, and the mortar can achieve related standards and requirements. In the composite cementitious material of desulfurated waste residue disclosed by the invention, solid waste is efficiently utilized for preparing composite cementitious material high in performances and low in cost by burning-free treatment process and efficient excitation pre-treatment technology, so that pollution can be reduced and energy can be saved.
Owner:SHANGHAI RES INST OF BUILDING SCI CO LTD

Oily sewage processing method

The present invention relates to a treatment method of oil-bearing sewage. Megadose coagulants are added in the oil-bearing sewage so as to carry out gel and milk breaking on the sewage and to form small alum flowers, and then polymer organic flocculating agents are added toenlarge the small alum flowers and then oil residues are formed in an oil-receiving flow tank to separate from water, thus sewage is purified. The oil residues are recycled in an oil residue collecting pool by a dirty oil collecting device and then pumped to an oil residue cleaning device, and oil residue cleaning liquor is added after being pumped to enter the oil residue cleaning device again. The oil residues are cleaned and the ''clean'' dirty oil acquired enters an oil gas gathering system then. The cleaning waste liquor acquired after the oil residues are cleaned is added into flow inlet water through a pump according to a certain proportion. The cleaning waste liquor is added in the inlet water as the coagulant to lead the coagulants originally added to be recycled. The present invention leads the treatment of water containing high oil stain to generate no secondary discharge pollution. The oil stain recycling rate reaches to 99 percent and the present invention has the advantages of low sewage treatment cost, few device and technics alternation and low alternation cost. The dirty water after treated meets corresponding standards.
Owner:洪骧龙

High-performance superfine cement based grouting material for microfissuring and silty fine sand soil grouting treatment and application of grouting material

The invention discloses a high-performance superfine cement based grouting material for microfissuring and silty fine sand soil grouting treatment, and application of the grouting material. The grouting material comprises the following ingredients in parts by weight: 50-79 parts of Portland cement clinker, 19-48 parts of an auxiliary cementing material and 2-7 parts of desulfurized gypsum, whereinthe auxiliary cementing material comprises the following ingredients in parts by weight: 25-57 parts of mineral slag, 8-21 parts of steel slag, 18-36 parts of pulverized fuel ash, 6-12 parts of limestone flour, 1-8 parts of silica fume and 2.5-12.8 parts of a high-performance composite regulator; the high-performance composite regulator comprises the following ingredients in parts by weight: 5-16parts of sodium hydroxide, 4-12 parts of sodium silicate, 4-14 parts of potassium metaaluminate, 12-21 parts of calcium chloride, 11-18 parts of lithium chloride, 4-12 parts of triethanolamine, 21-27parts of alum, 18-29 parts of aluminum sulfate, 0.2-1.5 parts of hydroxypropyl methyl cellulose, 0.1-3.0 parts of viscous polymer, 0-0.8 parts of polypropylene fiber and 0.5-3.0 parts of a superplasticizer; and the viscous polymer is an acrylic ester polymer or an ethylene-vinyl acetate copolymer.
Owner:SHANDONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products