3184 results about "Aluminium chloride" patented technology

The present invention is sludge curing agent and its application, and belongs to the field of soil treating chemicals technology. The sludge curing agent includes powdered components and liquid components, the powdered components include cement clinker 30-60 weight portions, slag 30-60 weight portions, lime 3-8 weight portions, gypsum 1-7 weight portions and other sulfates 1-7 weight portions; and the liquid components include polyacrylamide 5-30 weight portions, polyaluminum chloride 0-20 weight portions, mannitol 0-30 weight portions, lignosulfonate 20-80 weight portions, lignosulfonate-iron or chromium ion complex 0-30 weight portions, alkylphenol ethoxylate 0.2-2 weight portions, tannin 0-10 weight portions, humate 0-10 weight portions, and alpa-olefin sulfonate 0.2-2.5 weight portions. The sludge curing agent has low cost, small consumption, high cumulate strength and high cumulate water tolerance, and may be applied widely.

The invention discloses a method for producing superfine aluminium hydroxide and aluminium oxide by taking flyash of a recirculating fluidized bed as a raw material. The method comprises the following steps of: a) grinding the flyash, performing wet magnetic separation and deironization, and reacting with hydrochloric acid to obtain hydrochloric acid extract; b) introducing the hydrochloric acid extract into a macroporous cationic resin column for adsorption, after adsorptive saturation of the resin, eluting by using an eluant to obtain eluent containing aluminium chloride and iron chloride; c) removing iron from the eluent by using alkaline solution to obtain solution of sodium metaaluminate; d) adding a dispersing agent into the solution of sodium metaaluminate, and mixing uniformly to obtain dispersion; and e) performing carbon decomposition on the dispersion to obtain the superfine aluminium hydroxide. The superfine aluminium hydroxide is calcined at different temperatures to form gamma-aluminium oxide and alpha-aluminium oxide respectively. Compared with other methods, the method has the advantages of wide sources of raw materials, simple production process and high purity of the products.

The invention provides a flocculation curing composition of silt type soil and a stabilization improvement method of the silt type soil. The flocculation curing composition comprises flocculation curing agents as active ingredients. The flocculation curing agents are obtained through mixing the following substances as active ingredients: one kind of material or a mixture of fly ash, bottom ash and fly ash of paper making sludge, bottom ash and fly ash of cane trash and bottom ash and fly ash of various kinds of organic sludge, one kind of material or a mixture of powdery oxides, hydrates and hydrosulfates of calcium or magnesium are used as curing auxiliary agents, and one kind of material or a mixture of aluminium sulphate or aluminum chloride as powdery inorganic flocculation agents. The method comprises the following steps: adding the powdery inorganic flocculation curing agents or the composition thereof into the silt type soil with the water content percent of 600 to 5000 weight percent; separating the materials into supernatant fluid and pellet type solid materials after mixing and stirring; and making the pellet type solid materials reach the specified curing intensity to carry out stabilization improvement on the silt type soil.

is the invention discloses a flocculating agent for filthy mud dehydration, which is composed of polyaluminium chloride and polyacrylamide. The flocculating agent addition is 4.92 percent to 10.18 percent by weight of the solid content of the filthy mud; and the polyaluminium is 4.38 percent to 5.33 percent by weight of the flocculating agent. The flocculating agent has the advantages of low specific impedance value of the filthy mud and high solid content of filter mass after dehydration. The method of filthy mud dehydration and the method of flocculating agent adding are as follows: polyaluminium chloride is added first, then is fast stirred at the speed of 32.0 r/m for two minutes and slowly stirred at the speed of 10.0 r/m for three minutes, and the pH value of sewage mud is regulated to 6 to 8; and the polyacrylamide is added, is fast stirred at the speed of 32.0 r/m for three minutes and then is slowly stirred at the speed of 10.0 r/m for seven minutes. The methods have the advantages that the flocculating agent can fully contact solid grains to facilitate the flocculating agent to trap colloid grains, so that the concentration distribution of the flocculating agent is uniform; large grains can not be stirred into small grains, precipitated grains can not be stirred into non-precipitated grains, so that the flocculation effect is improved.

The invention discloses a method for preparing flocculant liquid polyaluminum chloride from aluminum ash, belonging to the technical field of solid waste treatment environment protection. The method comprises the following steps: uniformly mixing and stirring aluminum ash and water in a volume ratio of 1:(3-5), and soaking for 5-8 hours; pumping the solution into a reaction kettle, adding hydrochloric acid and water in an aluminum ash/hydrochloric acid/water volume ratio of 1:(2.5-3.0):(3.0-4.0), and reacting at 85-100 DEG C for 2-3 hours; carrying out solid-liquid separation with a plate and frame type filter-press, and adding a regulator to regulate the aluminum oxide content and basicity of the liquid, wherein if quicklime is used as the regulator, the volume ratio of the liquid to the quicklime is 1:(0.054-0.086), if aluminum dust is used as the regulator, the volume ratio of the liquid to the aluminum dust is 1:(0.023-0.04), and if solid calcium aluminate is used as the regulator, the volume ratio of the liquid to the solid calcium aluminate is 1:(0.042-0.063); and standing and aging for 48-72 while controlling the temperature at 50-60 DEG C, thereby obtaining the liquid polyaluminum chloride finished product. The invention has the advantages of simple technique, low cost and no secondary pollution, and is a good method for recycling aluminum ash.

The invention discloses a new method for resource comprehensive utilization of red mud and fly ash, and relates to a comprehensive utilization of industrial waste, specifically to a preparation method for a flocculating agent of aluminum ferric chloride and white carbon black. The method comprises the following steps: (1) acid leaching: the red mud and the activated fly ash are adopted as raw materials, and react with HCl, wherein the leaching temperature is 70-90 DEG C, a solid-liquid ratio is 10:1-10:3, the HCl concentration is 3-6 mol.L<-1>, the leaching time is 4-10 hours; (2) polymerization: Na2CO3 is added to a dissolution solution 1 to carry out telomerization, a dissolution solution 2 is added to the dissolution solution 1 until the dissolution solution 1 is stable, then the polymerization reaction is performed to obtain the polyaluminum ferric chloride, wherein the temperature is 60-70 DEG C, the pH value is 2.5-3.0, the aging time is 12-24 hours; (3) white carbon black preparing: a NaOH solution is adopted to carry out alkali dissolution to dissolve the filter residue, then treatments of acidification and calcination are performed to obtain the powder SiO2, wherein the alkali dissolution temperature is 80-100 DEG C, the time is 4-8 hours.

The present invention provides, according to an aspect thereof, a novel process for the preparation of dronedarone [1] and pharmaceutically acceptable salts thereof. According to a preferred embodiment, the process comprises N-acetylating of p-anisidine or p-phenetidine with acetic anhydride, reacting of the obtained N-(4-alkoxyphenyl)acetamide with 2-bromohexanoyl chloride or bromide in the presence of aluminum chloride or bromide to obtain N-[3-(2-bromohexanoyl)-4-hydroxyphenyl]acetamide [6a], converting the compound [6a] into 2-butyl-5-benzofuranamine hydrochloride [12a] and subsequently converting [12a] into [1] or pharmaceutically acceptable salts thereof. In accordance with another aspect of this invention, there are provided novel intermediates, inter alia the novel compounds [6a] and [12a]. The novel intermediates of the present invention are stable, solid compounds, obtainable in high yields, which can be easily purified by crystallization and stored for long periods of time.

A process for preparing aluminium sol includes such steps as proportionally mixing alumina and/or aluminium hydroxide and/or another aluminium source with sulfuric acid, reaction at 80-150 deg.C for 2-18 hr while stirring, adding water, aqueous solution of hydrochloric acid, or the aqueous solution containing aluminium chloride, adding aluminium, and reaction at 80-150 deg.c and 1-5 atmos for 3-40 hr. Its advantages are low cost, and ihgh viscosity.

The present invention relates to a preparation technique for preparing nanometer tin anhydride fiber gas sensor film material by using an electrostatic spinning method. The present invention comprises: 1, collosol gel static filature liquid allocation: polyethylene ketopyrrolidine is poured into dissolvent containing N, N-dimethyfomamide (DMF); the dissolvent is mixed at high speed to be completely dissolved; the polyethylene ketopyrrolidine/DMF dissolvent with the concentration of 5 wt percent to 8 wt percent is produced; and then, the dissolvent is mixed with qua-water stannic chloride water solution with the concentration of 10 wt percent to 40 wt percent; wherein, the weight ratio of the polyethylene ketopyrrolidine and the stannic chloride is between 3 to 1 and 3 to 4; the product is made after being mixed for 3 hours. 2. electrostatic spinning: The prepared collosol gel static filature liquid is injected into a electrostatic spinning device and transformed into aluminum chloride/ polyethylene ketopyrrolidine nanometer fibrous coat on the conditions that the voltage is between 25 Kv and 35 Kv; the extrusion speed is between 1 ml/min and 10 ml/min and the receive distance is between 10 cm and 20 cm through the electrostatic spinning. 3. calcination: finally, the prepared aluminum chloride/ polyethylene ketopyrrolidine nanometer fibrous coat is placed in a muffle furnace; the temperature is raised to 450 DEG C to 600 DEG C at the speed of 50 DEG C per hour; nanometer tin anhydride fibrous coat is gained after being calcined for 5 hours. The nanometer tin anhydride fibrous coat produced by the present invention is gas sensing material with high specific area and high sensitivity; in addition, the material can be widely applied to the field of catalyst, laser target material and so on.

The invention discloses a synthesis method for bisphenol F, in which aluminium chloride, titanium tetrachloride and modified cation exchange resin are adopted as catalysts, and phenyl hydroxide and formaldehyde are adopted as raw materials. The invention has the technical effects as follows: the aluminium chloride, the titanium tetrachloride and the modified cation exchange resin are adopted for catalysis to synthesize the bisphenol F, and the resin catalyst is easy to separate and recover and can be used repeatedly; 2, a recrystallization and reduced pressure distillation combined separation technology is adopted for coproduction of high-purity bisphenol F and common bisphenol F products, the maximum yield of the bisphenol F reaches 90 percent, the content of 4, 4'-bisphenol F in a dimethyl benzene recrystallization product reaches 93.5 percent, reduced pressure distillation after-products are mainly other two isomers, and the separation of the 4, 4'-bisphenol F is realized effectively; 3, the requirement for the concentration of the formaldehyde raw material is not strict while the traditional one stage process require that the concentration of formaldehyde is above 40 percent; and 4, the synthesis technology is simple, the operation is convenient, and the realization of industrial production is easy.

The invention discloses an active agent and a method for carrying out surface treatment on materials to be welded of aluminium and aluminium alloys so as to improve the energy utilization rate of the aluminium and the aluminium alloys, deepen the fusion depth of welding seams and further obtain higher welding quality. The active agent for laser welding consists of a chloride and a fluoride, wherein the mass ratio of the chloride to the fluoride is (1-2): (1-4); the chloride is at least one of lithium chloride, sodium chloride, potassium chloride, zinc chloride, magnesium chloride, aluminium chloride, calcium chloride or tin chloride; and the fluoride is at least one of lithium fluoride, sodium fluoride, magnesium fluoride or calcium fluoride. When the surface treatment is carried out, firstly the fluoride and the chloride are mixed fully and uniformly, water is added to form a supersaturated solution, then the supersaturated solution is coated on the surface of a welded test piece as a coating agent, then drying is carried out, and finally laser welding is carried out under the condition of gas protection.

The invention discloses a compound dust suppression agent for a coal mine and a preparation method of the compound dust suppression agent. The compound dust suppression agent comprises the following components in percent by mass: 0.05-1.00 percent of fatty alcohol-polyoxyethylene ether (JFC), 0.05-1.00 percent of sodium dodecyl benzene sulfonate (SDBS), 0.01-0.50 percent of polyacrylamide (PAM), 0.02-0.50 percent of polymeric aluminium (PAC) and the balance of water. The compound dust suppression agent disclosed by the invention has the advantages that the components are water-soluble materials, can be directly sprayed by using the original water spraying system of the mine, have wide sources, do not generate any harmful gases, and are non-toxic and tasteless; and the compound dust suppression agent is convenient for construction, and has better dust suppression effect of respirable dust in comparison that of the prior art.

Synthetic asphalt and petroleum asphalt modified synthetic asphalt emulsions which contain recycled tire rubber and processes for making the emulsions at temperatures above ambient or room temperature. These emulsions may contain significant quantities of recycled tire rubber and recycled and reclaimed motor oils and fluxes. In addition, aluminum chloride and ferric chloride may be used in clay-in-water solutions to form emulsifying agents for the synthetic asphalt and modified synthetic asphalt mixtures.

The composite flocculant for treating printing and dyeing effluent consists of natural high molecular water soluble chitosan and polyaluminium chloride. The usage of the composite flocculant in treating printing and dyeing effluent includes regulating effluent to pH 6-8, and throwing composite flocculant in the amount of chitosan in 1-2 ppm and polyaluminium chloride in 100-250 ppm to result in printing and dyeing effluent decolorizing rate up to 91 %. The composite flocculant of the present invention has simple compounding process, easy use, low cost, small thrown amount, excellent decolorizing performance, fast deposition, small sludge amount, easy biodegradation, less secondary pollution of water and thus wide application foreground.

The invention discloses a novel late transition metal alpha-diimine nickel (II) olefin polymerization catalyst with a symmetrical structure. The catalyst is a didentate coordination compound formed by an alpha-diimine ligand with a symmetrical Schiff base structure and a halogenide of later transition metal nickel (II). In the presence of diethyl aluminium chloride (DEAC) used as a cocatalyst, the coordination compound catalyst of nickel has higher activity for catalyzing ethylene to polymerize, which can reach 107gPE/(mol Ni h Bar), and obtained polyethylene has higher degree of branching, which can reach 114 branched chains per 1,000C.

The invention discloses high temperature resistance low-density high-strength cement paste which consists of the following components in parts by weight: 100 parts of cement, 23 to 35 parts of lightening admixture, 30 to 40 parts of high temperature strength stabilizer, 10 to 23 parts of filler, 1.5 to 2 parts of dispersing agent, 1 to 2 parts of early strength agent and 8 to 15 parts of fluid loss agent, wherein hollow microspheres are used as the lightening admixture; the high temperature strength stabilizer is high-activity silicon powder; the filler is micro silicon; the dispersing agent is an aldehyde ketone condensation product or a naphthalene dispersing agent; the early strength agent is formed by blending two or more of the following components: sulfo-aluminium sulfate, sodium silicate, basic aluminium chloride and the like; and the fluid loss agent is a sulphonated acetone-formaldehyde condensation product. The low-density cement paste can be used for well cementation of a heavy oil thermal recovery well on a low-pressure formation which is easy to leak, the strength recession of cement stones, which is caused by the high temperature, can also be greatly reduced, and the service life of the oil well is prolonged.