163results about How to "Realize industrialized continuous production" patented technology

The invention relates to an industrial production method and device of a urea-formaldehyde slow-release compound fertilizer and a device thereof. The industrial production method comprises the steps of adding water and oxidized starch to a reaction still and then pasting, adding urea of which the nitrogen content is 46wt% and formalin, stirring, dissolving and then adjusting the pH value to 8.5-8.8 by an alkaline matter, reacting at constant temperature of 60 DEG C to obtain reaction liquid; adjusting the pH value to 5.4-5.1 by the reaction liquid; reacting for 45 minutes at the constant temperature of 65-68 DEG C, then adjusting the pH value to 6.8-7.2, and terminating reaction to obtain the urea formaldehyde condensation product solution; mixing the urea formaldehyde condensation product solution with nitrogen, phosphorus and potassium materials, pelletizing, drying and cooling to below 35 DEG C, and screening to obtain the urea-formaldehyde slow-release compound fertilizer. The industrial production device of the urea-formaldehyde slow-release compound fertilizer is also provided by the invention. Urea formaldehyde is taken as a skeleton; rapid disintegration phenomenon of fertilizer particles caused by water absorption expansion is effectively prevented; the urea-formaldehyde slow-release compound fertilizer has good nutrient slow-release performance, and is high in pelletizing rate in the production process and strong in granule hardness, and the total nutrient content is improved.

The present invention relates to the preparation process of health food capable of raising immunological function, and features that the material for producing the health food consists of aweto mycelium powder, glossy ganoderma, astragalus root, wolfberry fruit and fleeceflower root. The health food has high nutritive value, obvious health function and low industrial production cost.

The invention discloses a method of producing o-tert-butyl phenol and p-tert-butyl phenol through combination of rectification and crystallization. The method comprises the steps that (1) an alkylatedproduct flow obtained through a reaction between phenol and isobutene is input into a first rectifying tower for rectification treatment, a first tower top material which contains the phenol and a light-component byproduct is extracted from the tower top, and a first tower bottom material which contains the o-tert-butyl phenol, the p-tert-butyl phenol and a heavy-component byproduct is extractedfrom the tower bottom; (2) the first tower bottom material is input into a second rectifying tower for rectification treatment, an OTBP product is extracted from the tower top, a second side-line material which contains the p-tert-butyl phenol is extracted from a side line, and a second tower bottom material which contains 2,4-di-tert-butyl phenol and a heavy-component byproduct is extracted fromthe tower bottom; and (3) the second side-line material is input into a crystallization unit, so that the p-tert-butyl phenol in the second side-line material is cooled and crystallized, and after impurities are separated, the temperature is increased for fusing and discharging to obtain a PTBP product. According to the method, through coupling of the rectification technology and the crystallization technology, the problem of eutectic point limitation can be broken, and the product purity is effectively improved.

The invention relates to the technical field of building materials, and discloses a reflective heat-insulating flexible decorative sheet. The decorative sheet comprises a surface layer and a back surface layer in sequence from the top to the bottom, wherein the surface layer comprises the following components in parts by weight: 0.5-30 parts of an acrylic emulsion or redispersible latex powder, 0-20 parts of reflective powder, 5-20 parts of hollow glass microbeads, 30-90 parts of an inorganic filler, 0-50 parts of an inorganic cementing material, 0-1 part of a water-retaining agent, 0-1 part of fibers, 2-30 parts of titanium white, and 0-5 parts of a pigment; and the back surface layer includes the following components in parts by weight: 0.5-30 parts of an acrylic emulsion or dispersiblepolymer powder, 0-20 parts of hollow glass microbeads, 0-1 part of a water retaining agent, 30-90 parts of an inorganic filler, 0-1 part of fibers, 0-30 parts of titanium white, and 0-5 parts of a pigment. The flexible decorative sheet disclosed by the invention has good reflective heat-reflective effects, is heat-preservation and thermal-insulation, has a simple production process, can realize industrialized continuous production, has low production costs and a wide application range, and can be widely used in the fields of fixture and decoration.

The invention discloses a method for extracting scandium and other rare earth from zirconium oxychloride acid pickle. The method comprises the following steps that (1), the zirconium oxychloride acid pickle is subjected to floculation adsorption slag removing, scandium element enrichment, acid modulation and impurity removing, scandium element purification and rare earth recycling, and high-purity scandium strip liquor and extraction raffinate containing rare earth are obtained; (2), the high-purity scandium strip liquor is subjected to oxalic acid precipitation and high-temperature calcination to prepare high-purity scandium oxide; and (3), the extraction raffinate containing the rare earth is subjected to precipitation zirconium removing, extraction iron removing and carbonate adding reactions to obtain rare earth carbonate. The method belongs to the technical field of hydrometallurgy and waste acid treatment and comprehensive utilization. According to the method, the high-purity scandium oxide powder with the grade being above 99.9% can be obtained; and meanwhile, the other rare earth is recycled in a manner of rare earth carbonate enriched products, the total recycling rate of the rare earth is larger than 80%, the investment is small, the manual requirement is small, the handling capacity is large, and industrial continuous production can be achieved.

The invention discloses an easy-cutting high strength zinc alloy. Most of current Zn-Al series alloys have the defects of poor cutting performance, inter-granular corrosion tendency, low dimensional stability, low working temperature, poor creep resistance, poor corrosion resistance and the like. The zinc alloy is characterized by comprising the following components in percentage by weight: 1 to 25 percent of aluminum, 0.5 to 3.5 percent of copper, 0.005 to 0.3 percent of magnesium, 0.01 to 0.1 percent of manganese, 0.005 to 0.15 percent of bismuth or / and 0.01 to 0.1 percent of antimony, no more than 0.05 percent of impurities and the balance of zinc. The strength of the zinc alloy can be effectively improved; the zinc alloy has good cutting performance and certain plastic processing performance; the raw materials are cheap, easily obtained and environment-friendly; and the zinc alloy is an ideal material for replacing current domestic lead-containing brass and partial stainless steelparts.