35results about How to "Improve pulping" patented technology

The invention discloses a sludge petroleum coke slurry and its producing method and application. Said sludge petroleum coke slurry contains 100-200 shares of petroleum coke by weight, 5-100 shares of moisture sludge by weight, 5-200 shares of water by weight, 0.01-2 shares of dispersant by weight, 0.01-2 shares of sludge modification reagent by weight. The produced high concentration sludge petroleum coke slurry can be a burning fuel or producing synthetic gas and hydrogen by gasification. It not only fully utilize the caloric caloricity in the sludge and gets over the problems that the present moisture sludge has a high heat treatment energy consumption and the offgas and dregs are harmful and poisonous and has a big industrialization prospect.

The invention discloses a viscosity-adjusting admixture for spraying construction and a preparation method thereof. The viscosity-adjusting admixture for spraying construction of the present invention is composed of the following ingredients calculated by weight: 60-90 parts of ultrafine powder, 5-10 parts of rheology modifier, 5-10 parts of aggregate wrapping agent, 0.5-1 part of air-entraining agent, 1-10 parts of reinforcing component and 1-10 parts of coagulation-adjusting component; the ultrafine powder is 600-1000 mesh ultrafine limestone powder; the aggregate coating agent is nano-bone Material wrapping agent. The viscosity-adjusting admixture of the invention can reduce the rebound rate, improve the construction efficiency, and has the effect of increasing the strength of each age, and can significantly improve the overall quality of the sprayed mortar and sprayed concrete construction projects. The admixture is mainly used to adjust the viscosity of sprayed materials, and has the functions of reducing pumping pipe plugging, improving construction efficiency, improving resilience in spraying construction, and increasing the compressive strength and bonding strength of materials at various ages.

The invention discloses a resin composite mica paper. A preparation method of the resin composite mica paper comprises preparation of a mica layer, preparation of a resin layer and compounding of the mica layer and the resin layer. The preparation process of the resin layer comprises mixing phenolic epoxy resin, polyimide resin, ethylene glycol ether, 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, dibutyl phthalate and water, carrying out heat treatment, and carrying out extrusion molding to obtain the resin layer. The compounding process of the mica layer and the resin layer comprises placing the mica paper on the resin layer, carrying out hot-pressing compounding, and then carrying out natural cooling so that the resin composite mica paper is obtained. The resin composite mica paper has insulativity and high temperature resistance of the mica paper and has high mechanical strength and toughness.

The invention discloses a system and a method for improving slurry property of low order coal slurry. The system includes a powder making system and a fine powder separating system. The powder making system comprises two vertical mill mechanisms. The vertical mill mechanisms are connected with bucket elevators which are respectively connected with a coarse powder finished product cabin and a fine powder finished product cabin. The fine powder separating system comprises a buffering cabin connected with the fine powder finished product cabin. The buffering cabin is communicated with a first grader and a second grader in sequence. The first grader and the second grader are respectively communicated with a coarse powder collecting cabin and a super fine powder collecting cabin. The coarse powder finished product cabin is communicated with a slurry mixing system through a dense phase conveying device; and the fine buffering cabin is communicated with the slurry mixing system through a conveying belt. The method includes three parts of coarse powder preparation, fine powder separation and extraction, and high-density coal slurry preparation. By collocating proportion of coarse coal powder and fine coal powder, deposition efficiency of coal powder is improved, distribution of coal powder after being mixed is close to an Alfred model; and slurry property of low order coal slurry is improved through graduation.

The invention provides a preparation method of blended coal-water slurry. The method comprises: crushing raw coal, petroleum coke and fly ash after blending to obtain the first slurry; blending petroleum coke, fly ash with water, The additives are mixed to obtain the second slurry; the first slurry and the second slurry are mixed and stirred to obtain the third slurry, and then shaped and finely ground, and the obtained fourth slurry is sieved, and the sieved slurry It is the fifth slurry, and the sieve residue is the sixth slurry; return part of the sixth slurry to mix with the second slurry, and return the remaining sixth slurry for shaping and fine grinding; output the fifth slurry to obtain coal water slurry . The method of the present invention adopts coal blending technology, and on the basis of raw coal, petroleum coke and fly ash are added to form blended coal. The combination of particle size can improve the accumulation efficiency of coal-water slurry, thereby increasing the calorific value of coal-water slurry, and it can be better used as gasification coal-water slurry.

The invention discloses a pulp beating and refining device for papermaking production, comprising a tank body, a pulp stirring mechanism and a pulp grinding mechanism, wherein the tank body is provided with a first partition plate and a second partition plate, the first partition plate and the second partition plate divide the inner cavity of the tank body into a stirring chamber, a grinding chamber and a functional chamber from top to bottom in sequence, and the tank body is provided with a feeding port, a discharging port and a controller. The pulp stirring mechanism comprises a motor bracket, a stirring motor, a stirring shaft and stirring blades. The pulp grinding mechanism comprises a protective shell, a reducer, an upper grinding disc, a lower grinding disc, and a grinding groove. Agrinding gap adjusting mechanism comprises a lifting push plate, a push rod, a sliding rod, a fixed seat, a first slider, a second slider, a first hinge rod, a first cross rod, a second hinge rod, a second cross rod and a bidirectional servo cylinder. The first partition plate is provided with a material discharging pipe communicating with the stirring chamber and the grinding chamber, the material discharging pipe is connected in series with a solenoid valve. The pulp beating and refining device has the advantages of simple structure and strong practicability.

The invention discloses resin composite mica paper. A preparation method of the resin composite mica paper includes: preparing a mica layer; preparing a resin layer, to be more specific, mixing novolac epoxy resin, polyimide resin, glycol ether, Texanol and dibutyl phthalate with water, performing thermal treatment, and performing extrusion forming to obtain the resin layer; performing resin compositing on the mica layer and the resin layer, to be more specific, placing the mica layer on the resin layer, performing hot-pressing resin compositing, and naturally cooling to obtain the resin composite mica paper. The resin composite mica paper has the advantages of excellent insulating performance and excellent high temperature resistance of the mica paper and is quite high in mechanical strength and toughness.