31results about How to "Small bubble diameter" patented technology

The invention provides a compound concrete foaming agent and its preparation method and application. 1.5-2.5 parts of anhydrous sodium carbonate, 3.5-4.5 parts of industrial caustic soda, 3-5 parts of triethanolamine, 0.2-0.5 parts of industrial grade hydrochloric acid, 53.5-55.8 parts of water; the B component is: triethanolamine 0.2- 0.5 parts, 8-10 parts of sodium sulfate, 12-15 parts of sodium nitrite, 10-25 parts of calcium chloride, 54.7-64.5 parts of water. The composite concrete foaming agent of the present invention can not only increase the amount of foaming agent, but also compensate the concrete strength and solidification time; it can not only produce ultra-low-capacity foamed concrete, but also use a large amount of waste residues such as industrial and construction waste , to produce lightweight foamed concrete.

The invention belongs to the field of concrete additives, and concretely relates to an air entrainment-controllable polycarboxylic water reducer used for purely machine-made sand concrete, and a preparation method thereof. The preparation method comprises the following steps: carrying out an esterification reaction on an alkylphenol polyoxyethylene monomer and an unsaturated carboxylic acid to generate an unsaturated carboxylic acid-alkylphenol polyoxyethylene esterification product monomer, carrying out an aqueous solution copolymerization reaction on the unsaturated carboxylic acid-alkylphenol polyoxyethylene esterification product monomer, an unsaturated polyether monomer and an unsaturated sulfonic acid monomer through an oxidation-reduction initiation system, and adding a proper amount of a molecular weight control agent to control the molecular weight in order to obtain the air entrainment-controllable polycarboxylic water reducer. The water reducer prepared in the invention has the advantages of high water reduction rate, good adaptability, small bubble diameters, stable sealing property and controllable air entrainment when applied to the purely machine-made sand concrete, and well solves the problems of difficult air entrainment, poor bubble stability and large concrete pumping loss of the purely machine-made sand concrete.

The invention relates to a steel wire mesh and fiber enhanced integrated foam concrete lightweight wall plate and a manufacturing method thereof. The wall plate comprises foam concrete, wherein the foam concrete covers a 3D steel wire mesh; alkali-resisting glass fiber gridding cloth is arranged on each of the upper and lower surfaces of the 3D steel wire mesh; proper amount of alkali-resisting anti-cracking fibers are added into the foam concrete; the 3D steel wire mesh and the alkali-resisting glass fiber gridding cloth are integrally poured and molded to form an integrated structure sheet material through foam concrete paste; a tenon convenient for mounting and a groove matched with the tenon are pre-formed on the two sides of the sheet material respectively. The manufacturing method of the wall plate comprises the following steps: preparing the foam concrete paste and pouring and molding the integrated structure sheet material; and preparing a compound type high molecular modifier containing an ethylene / vinyl acetate copolymer, calcium stearate, lithium carbonate and silicon resin polyether emulsion. The wall plate has the advantages of light weight, high strength, heat preservation and heat insulation, good waterproof performance, good durability, no layering and cracking, simple manufacturing process and capability of greatly improving industrial production efficiency.

The invention relates to slurry for a hydrogen oxidation catalyst coating and a preparation method of the slurry, mainly solving the problems that in the prior art, the preparation of the slurry costs a long time and the slurry is large in granularity and low in stability, and thus a catalyst is long in production period and high in cost, the abrasive loss rate of the prepared coating is high, and the performance and the stability of the catalyst are low. The slurry for the hydrogen oxidation catalyst coating comprises the following components of water, aluminium sol, aluminium oxide, a coating adjuvant, a pH regulating agent and a foaming agent. The preparation method of the slurry comprises the following steps of: sequentially adding the water, the aluminium sol, the aluminium oxide and the coating adjuvant into a colloid mill, and circulating the mixture; regulating the slurry by the pH regulating agent to obtain slurry I; foaming a certain amount of the foaming agent and water by using a foaming machine; and adding foams into the slurry I to obtain slurry II. By the technical scheme, the problems are solved well; and the slurry and the preparation method thereof can be applied to the industrial production of the catalyst coating slurry.

The invention provides a foam concrete, which is prepared according to the following method: (1) uniformly mixing cement, water reducing agent, waterproofing agent and part of water to obtain cement slurry. (2) Foam the composite foaming agent and the remaining water in a foam machine, add the cement slurry in step (1) and mix evenly to obtain foam cement slurry, then add ceramsite and coagulant, mix evenly to obtain foam concrete pulp. (3) Pour the foamed concrete slurry into the mold, and after molding, steam curing to the specified age, that is to say. Described cement is made up of portland cement and aluminate cement by mass ratio 5-10:1, and described composite blowing agent is made up of fatty alcohol polyoxyethylene ether, sodium dodecylbenzene sulfonate and tapioca starch by mass The ratio is 1‑2:0.5‑2 composition. The foamed concrete material of the invention has good waterproof and anti-seepage properties, high strength and is not easy to crack, and can be widely used in building materials.

The invention provides a circulating method for a cold regenerated catalyst and a catalytic cracking reaction regenerating system. The catalytic cracking reaction regenerating system comprises a hoisting pipe reactor, a pre-hoisting section, a regenerator, a heater and a gas-solid annular flow mixing stripper, wherein the gas-solid annular flow mixing stripper is used for mixing a first solid grain and a second solid grain at different temperatures during a regenerating form fluid catalytic cracking process and stripping the smoke and air taken by the solid grains after being mixed; the first solid grain is a low-temperature catalyst or low-temperature to-be-generated agent; and the second solid grain is a high-temperature catalyst. The circulating method for the cold regenerated catalyst comprises the following steps of: mixing and exchanging heat of the first solid grain from the heater and the second solid grain from the regenerator in the gas-solid annular flow mixing stripper, and meanwhile, stripping the taken smoke and air, forming the mixed catalyst and then entering into the pre-hoisting section.

The invention provides a foamed cement insulation material, which comprises the following raw materials in weight percentage: 30-55% of cement, 0.1-1% of admixture, 1-5% of composite foaming agent, and the balance is water. The cement is composed of Portland cement and aluminate cement in a mass ratio of 5-10:1. The composite blowing agent is composed of hydrogen peroxide, fatty alcohol polyoxyethylene ether, sodium dodecylbenzenesulfonate and tapioca starch in a mass ratio of 10:1-2:0.5-1:1-2. The foamed cement insulation material of the invention has good waterproof and anti-seepage properties, high strength and is not easy to crack, and can be widely used in building materials to play the role of heat insulation.

The invention discloses foam concrete and a preparation method thereof. The foam concrete comprises a gelling material, light aggregate, water, admixture and foaming agent. The preparation method comprises the following steps: (1) pre-treating raw materials to prevent hard lumps and hard grains in the raw materials from depositing in foam slurry; (2) weighing each component according to a proportion; (3) preparing and adding foaming solution; (4) loading and stirring, namely, adding water into a stirrer, starting the stirrer, and adding cement, coal ash, perlite, waterproof agent, anti-freezing agent, water reducing agent and fiber into the stirrer in turn; (5) foaming, namely, foaming at the same time of stirring the slurry, sealing a valve firstly and then pressurizing the valve by an air compressor; (6) adding foam, namely, after the gelling slurry is well prepared, adding the foam into the gelling slurry under the state of stirring without stopping the stirrer; and (7) casting andmolding, namely, when the slurry surface has no floating foam, finishing the preparation of the foam slurry. The foam concrete has the functions of light weight, water proofing, fire resistance, heatinsulation, freezing resistance, cracking resistance, shock resistance and the like, and is particularly suitable for engineering insulating layers in cold areas and water-blocking and shock-resistant layers of underground engineering.

The invention relates to aluminum oxide slurry for spray coating and a preparation method thereof, which mainly solve the problems that in the prior art, the aluminum oxide slurry has high granularity and poor uniformity and dispersibility, so the blockage is easy to be caused during the spray coating, the atomization effect is poor, and the prepared coating has poor uniformity and poor firmness. The aluminum oxide slurry adopts the technical scheme that the aluminum oxide slurry comprises the following ingredients: water, aluminum sol, aluminum oxide, cation and anion regulating agents and foaming agents, wherein the aluminum sol, the aluminum oxide and the cation and anion regulating agents are dissolved in the water under the stirring condition and are sufficiently mixed, and first slurry is obtained; a certain quantity of foaming agents and water are foamed by a foaming machine, and the foam is added into the first slurry; and the slurry added with the foam is fast emulsified and ground in a short time in a colloid mill. The problems are perfectly solved, and the aluminum oxide slurry can be used for industrial preparation of the aluminum oxide slurry in layered composite carriers.