37results about How to "Stable production control" patented technology

The invention discloses a method for preparing silk protein composite cellulose fibers, which includes steps: firstly, adding degummed waste silk into LiBr solution, dissolving the waste silk to prepare silk protein solution in which silk protein accounts for 3-15%, by weight; secondly, adding the silk protein solution into sodium hydroxide solution with cellulose sulfonate to obtain blended solution of silk protein and cellulose, wherein blended silk protein solution accounts for 5-50% of that of the sodium hydroxide with cellulose sulfonate by weight; and thirdly, spinning the blended solution by coagulating bath and obtaining the silk protein composite cellulose fibers by post-processing. By the method, recovery value of the waste silk is improved greatly, special effects of whitening and skin caring of the silk protein composite cellulose fibers can be realized, and the fibers are smooth and soft to touch as silk, and have the skin caring and whitening effects that the effects of protein powder fibers or blended fibers of protein powder and cellulose solution cannot match.

The invention discloses a high-formation, high-weather-resistance, ultra-thin specification hot-rolled steel plate and its CSP production process. The composition and weight content of the steel plate are as follows: C: 0.035-0.065%, Si: 0.15-0.3%, Mn: 1.3-1.6 %, Cu: 0.12-0.2%, Cr: 0.2-0.6%, Ni: 0.1-0.2%, Ti: 0.1-0.13%, Mo: 0.1-0.2%, Als: 0.025-0.045%, P: 0-0.018% , S: 0 ~ 0.005%, N: 0 ~ 0.006%, the rest is Fe and unavoidable impurities; the production process controls the converter smelting steel P is 0 ~ 0.012%; the crystallizer heat flow is 2.45 ~ 2.55mw / m 2 , the specific water volume of the continuous casting secondary cooling water is 1.77~1.83L / Kg, the thickness of the continuous casting slab is 65~75mm, and it is pressed down to 55~60mm by the liquid core for many times; the temperature of the casting slab is 1230~1250℃; The rolling temperature is 880-920°C; coiling is carried out after laminar flow cooling, adopting the head ladder cooling method, after coiling off-line, cooling to 280-320°C at a cooling rate of ≤10°C / S and then rapid cooling. The produced thin gauge steel plate has high formability while stably obtaining high strength and high weather resistance.

The invention discloses a method for producing a thin-specification low-alloy high-strength diamond plate based on a CSP process. The method comprises the steps of 1, controlling heating temperature,specifically, the charging temperature and the tapping temperature are controlled; 2, controlling threading speeds, specifically, the different threading speeds are controlled according to different thicknesses of rolled finished products; 3, controlling rolling pressure, specifically, rolling force parameters are adjusted according to different thickness specifications; and 4, controlling roll shifting, specifically, after roll changing calibration is finished, circulating roll shifting from a zero point position with steps of 20 mm, 25 mm and 30 mm is started. According to the method, by controlling the heating temperature, the threading speeds, the rolling pressure, and the roll shifting and by adopting a laminar cooling mode for control, the pattern integrity and the plate shape of thelow-alloy high-strength diamond plate are ensured, the related standards and user requirements are met, the stable batch supply is formed, the production process is controlled stably, no production accidents such as scrap steel, and broken casting occur, and the stable batch production of the thin-specification low-alloy high-strength diamond plate produced by the CSP production line is realized.

The invention discloses a production technique of a high-water-soluble-phosphorus sulfur-base compound fertilizer, which comprises the following steps: mixing 20-25 wt% dilute phosphoric acid with a mother solution in an industrial monoammonium phosphate device according to the mass ratio of (2-4):1, and adding 0.88 part of 98 wt% concentrated sulfuric acid and 1.0 part of potassium chloride to react for 4-6 hours; and neutralizing and granulating to obtain the sulfur-base compound fertilizer in which the water-soluble phosphorus content can reach 88% above. The invention also discloses a device for producing the high-water-soluble-phosphorus sulfur-base compound fertilizer by using the technique. The high-water-soluble-phosphorus sulfur-base compound fertilizer has the advantages of smooth appearance and uniform granules. The sulfur-base compound fertilizer device is easy to operate and steady in production control in the granulation process, and can maximally display the productivity.

The invention relates to a composite fuel fuming furnace reduction and volatilization smelting method and belongs to the technical field of thermometallurgy. The method comprises the steps that pulverized coal and natural gas are adopted as a composite fuel of reduction and volatilization smelting of a fuming furnace, the natural gas is sprayed into the fuming furnace through natural gas spray nozzles, the pulverized coal and primary air are blended in a pulverized coal fuel supply system and then sprayed into the fuming furnace through pulverized coal spray nozzles; and in the reduction and volatilization smelting process, the pulverized coal spray amount and the natural gas spray amount are regulated according to the situation of cold and hot materials of the fuming furnace. By adoptingthe reduction and volatilization smelting method, the temperature rising speed is high, the fuming furnace is flexible to operate, regulation is easy and convenient, the automation degree is high, andthe problems that supply of the pulverized coal or the fuel gas is interrupted and consequentially slag discharging of the fuming furnace is difficult can be effectively prevented; clean and long-period continuous production and operation can be achieved, reduction and volatilization reaction of the fuming furnace is more thorough, and matching with an upstream and downstream operation system isfacilitated; and the production efficiency is high, production control is stable, and stable and refined production control can be achieved easily.

The invention relates to a special additive for self-compacting concretes for concrete pouring in closed space. The special additive can be used for preparation of various self-compacting concretes and is applicable to preparation of high-flowability concretes, pouring in closed space and various special-structured buildings. The special additive is prepared from, by mass percent, 5-10 of a polycarboxylate superplasticizer, 30-50 of polycarboxylic acid, 10-20 of a viscosity modifier, 1-3 of weepage inhibitor, 0.1-0.3 of an antifoaming agent, 1-3 of a retarder and 17-47 of water. The special additive for the self-compacting concretes for concrete pouring in the closed space has advantages that concrete workability can be improved remarkably, concrete slump retaining time is prolonged, weepage and laitance layers are avoided after concrete pouring, and construction requirements of the self-compacting concretes are met.

An o-tert-pentylphenol production process adopts aluminum phenoxide as catalyst and performs alkylation of phenol and isoamylene under a certain temperature and pressure to synthesize o-tert-pentylphenol. The reaction temperature is 100-180 DEG C, the reaction time is 5.0-7.0h and the weight percent of aluminum phenoxide to phenol is 0.01%-1.0%. The catalyst has good catalytic activity, the once-through yield of the product is more than 80%, the phenol conversion rate is more than 90% and the product purity is more than 99.5%. The alkylation reaction solution is sent to a rectification systemafter catalyst deactivation and treatment; the product o-tert-pentylphenol can be obtained through refinement and separation, the residual residue can be reacted with isoamylene continuously in the present of catalyst to produce 2,4-di-tert-pentylphenol and the whole process does not generate environmental pollution. By adopting the process to produce o-tert-pentylphenol, the equipment investmentis small, the process flow is short, the material and energy consumptions are low, the production cost is low and the quality is stable, thus the process is applicable to the industrialized production.

The invention relates to a process and equipment for the continuous catalytic polymerization aggregation of C9 petroleum resin. The process adopts multi-tower refining for separating and refining C9 raw materials, and adopts a continuous catalytic polymerization technique and a solvent and low polymer stripping technique for realizing automatic continuous large-scale production, wherein a stripping tower used in the stripping technique comprises two major parts, namely a distilling section and a stripping section; the distilling section is provided with a plurality of layers of fillers for better separating gas and liquid components; and the stripping section adopts a multi-stage stripping device for stripping. The process and the equipment can overcome the drawbacks in the production process of the conventional process such as uneasy stable control, high energy consumption and unstable product quality. The C9 petroleum resin produced by the process and the equipment is improved in color phase and resin softening point.

The invention relates to a lead smelting method adopting pulverized coal as injection fuel in ISA furnaces, belonging to the technical field of pyrometallurgy. The method adopts the modes of continuous feeding and intermittent slag and lead discharge and comprises the following steps: 1) continuously adding lead concentrate, roasted lead slag, a flux, a slag former and a reducing agent to an oxygen-enriched top blowing furnace to be smelted; 2) sending the fuel in a spray gun into the spray gun by a Clyde pulverized coal system and injecting the fuel into a molten pool via a pulverized coal pipeline to sharply react with oxygen-enriched air to generate heat; 3) mixing loose coal used as the reducing agent with the raw materials and adding the mixture to the furnace; 4) adjusting the pulverized coal injection amount and the lifting height of the spray gun according to the temperature and height of the molten pool; 5) after separating lead and the slag, reducing the addition of the loose coal, adjusting the temperature of the molten pool, entering the stages of slag discharge and lead discharge and sending flue gases to an acid making system after waste heat and smoke dust in the flue gases are recovered by a waste heat boiler and an electric dust collector. As the pulverized coal is adopted as the fuel, the method is economical and low-carbon. The method operates efficiently, is simple to operate and has achieved industrial application.