36results about How to "High degree of comprehensive utilization" patented technology

The invention discloses a geopolymer gelling material and a preparation method thereof. The geopolymer cementitious material is made from kaolin and red mud after extracting iron as main raw materials. The invention has simple process, requires less equipment, can process a large amount of red mud, has low cost, is highly scalable, is less affected by the environment, and the prepared geopolymer cementitious material has better mechanical properties, and other characteristic indexes are also comparable to those of Metakaolin geopolymers are basically equivalent or even better. Using red mud after iron extraction to replace part of metakaolin to prepare geopolymers has great significance for improving the comprehensive utilization of red mud.

The invention discloses a soil water-retaining agent produced by using aluminum ash and a preparation method thereof. The method comprises: respectively adding dilute nitric acid and sodium sulfide solution to the aluminum ash to remove the heavy metals in the aluminum ash, and the content reaches the agricultural heavy metal limit standard; secondly, mixing and grinding the aluminum ash from which the heavy metals have been removed and the calcium-based compound; fully mixing After the material is activated at high temperature, a material with calcium sulfoaluminate as the main mineral component is obtained; finally, under hydration conditions, a soil with weak alkali characteristics is obtained with ettringite with 32 crystal waters as the main mineral component Aquasorb. The product can be used in drought resistance and soil improvement in arid and semi-arid areas. The invention realizes the high-efficiency agricultural comprehensive utilization of aluminum ash, a secondary by-product of aluminum extraction, and provides a scientific method for reducing the storage of aluminum ash and making full use of aluminum resources; the prepared ettringite water-retaining agent has a certain soil water-retaining capacity , the long-term water retention effect is good, and the production cost of the product is low.

The invention relates to a technology for processing lead copper matte by ferric chloride, and belongs to the wet method field of the non-ferrous metal metallurgy. The technology comprises the following steps: crushing and grinding the lead copper matte, and sieving by a mesh 80 mesh sieve to obtain below 80 mesh particles; and carrying out normal pressure leaching of the ground lead copper matte in a leaching tank at 50-100DEG C for 4-8h, wherein the FeCl3 concentration is controlled between 200g / l and 400g / l, and the liquid-solid ratio is 3-10:1. Air is properly blown and a small amount of hydrochloric acid is added to acidify in order to improve the leaching effect and shorten the leaching time. Trivalent iron ions are utilized as an oxidizing agent to leach sulfides under an acidic condition. In the oxidation leaching process, sulfur in the lead copper matte is oxidized into elemental sulfur which is transferred to slag, copper is oxidized and enters a solution in an ion state, and lead is residual in the slag as lead chloride together with gold and silver; after completing the leaching process, liquid-solid separation of an ore pulp is carried out while hot to realize the preliminary separation of copper and lead; and scrap ion is added to the copper-enrich leaching solution to displace copper in the leaching solution in order to obtain a preliminary product copper sponge.

The invention relates to an environmental-friendly washing stone made from waste ceramics and a method for making the same. The washing stone comprises the following compositions in weight percentage: 70 to 85 percent of the waste ceramics, 3 to 8 percent of limestone, 10 to 20 percent of clay, 0.2 to 0.7 percent of additive, and 0.3 to 1.3 percent of combustion improver. The method for making the washing stone comprises the following steps sequentially: wet grinding; filtration; pressure filtration; first time of pugging; material bundling; vacuum pugging; edges and corners removal through arounding machine; drying; sintering; and surface layer removal through a grinding machine. The method combines the characteristics of a large amount of the waste ceramics in the prior industrial production and great demand for washing stone in garment industry, changes waste into valuable, has low production cost, and greatly improves comprehensive utilization degree of resources; besides, the produced washing stone has the advantages of light weight, even obturator foramen, certain hardness, good durability which is 8 times that of a natural vesuvianite, long service life, good stability, nosecondary pollution, great reduction of the import volume of the natural vesuvianite, and benefit to both the nation and the people.

The invention discloses a method for refining the high-purity solanesol by utilizing the solanesol thick paste. The solanesol thick paste is added with ethyl alcohol and potassium hydroxide after lowpolar solvent is removed from the solanesol thick paste; freezing and filtration are performed after the reaction; after the ethyl alcohol is recycled with a filter cake, the solanesol thick paste isadded with acetone for dissolution; cooling, filtering and impurity removal, recooling, filtering and impurity removal are performed to the obtained filtrate; and finally the crystalline mass obtainedthrough freezing and filtering is the required high-purity solanesol. The method has the advantages of simple process, quick separation speed, short production cycle and low solvent loss, and the industrialized production is easy to realize. The used solanesol has low crude product content, and the mixed solvent is not used during the processes of saponification, impurity removal and edulcoration, thereby greatly facilitating the recycling and the reutilization of the solvent. The tobacco absolute oil can be obtained from the saponated liquid generated during the process of extracting the solanesol through the further separation. Therefore, the comprehensive utilization degree of the wastes is improved.

A system for preparing fresh water by air and hydraulically generating electric energy, used to treat water, bittern, or industrial sewage, is composed of a solar heat collecting shed, a solar chimney on said shed, an indirect condensing unit on the top of said chimney, and a hydraulic turbogenerator set under said chimney. The water is forced to evaporate and the indirect heat exchanger is used to condense the wet and hot air to become fresh water. The fresh water stream can drive said turbogenerator.

The invention discloses a waste heat recovery device of an air compressor and a control method of the waste heat recovery device. The waste heat recovery device comprises heat exchanging modules and enhanced heat exchanging modules, wherein the heat exchanging modules are arranged in parallel at the two ends of an oil-channel electric valve; the reinforcing heat exchanging modules are arranged in parallel at the two ends of the air-channel electric valve; the heat exchanging modules and the reinforcing heat exchanging modules are utilized to recover and store the heat energy in circulating oil and the heat energy in compressed air lost and wasted when the air compressor operates; the heat energy of the compressed air can be recycled at highest efficiency under the premise that the operation of the air compressor is not impacted. According to the waste heat recovery device of the air compressor and the control method of the waste heat recovery device, the collected data are analyzed and operated so as to realized effective high intelligent control; not only is the efficiency of the operation of the air compressor improved, but also the energy input of the heat energy utilizing modules can be reduced, the energy consumption or fuels for heating are lowered, and energy comprehensive utilizing degree is improved. Therefore, the waste heat recovery device has the advantages that the energy-saving effect is good, the intelligent degree is high, and the stability is excellent.

Extraction of pine nut oil, residual oil dregs food after extraction as well as its producing method, that is obtaining pine nut after exuviating and removing skin; obtaining pine nut oil by exceed critical CO2 hydro-extraction; to get out the residual oil dregs after extraction to dry, then to grind into powder, and adding Chinese chestnut powder and walnut powder to mix as well as dry again to produce complex pine nut nutrition powder. Or using the pine nut as whole body, one-half crash, quarter crash to extract residual oil dregs, then to add into a flovoring liquid composed of common salt, liquorice, aniseed, pepertree, Chinese cinnamon, fine ginger and water to bloat, then produce dainty instant pine nut. Compared with the existing technology, the present invention improves the oil-displaced ratio, and produces dainty instant pine nut foods using extracting residual dregs, improves the using ratio of the pine nut; the line exceed critical CO2 hydro-extracting technics which takes raw ginger as anti-oxidant, ethanol as entrainer, is more advanced.