2results about How to "Reduce steam consumption" patented technology

The application belongs to the technical field of alumina production and specifically relates to a preparation method of a sodium aluminate solution fine filtration filter aid, which uses lime or lime milk, a sodium aluminate solution and ethanol or methanol as raw materials, and the ratio of the raw materials is as follows: 1 part of lime or lime milk, 2-20 parts of the sodium aluminate solution, 0.02-0.2 parts of ethanol or 0.01-0.1 parts of methanol, the concentration of the sodium aluminate solution is 100-300 g / L of Na2O and 50-220 g / L of Al2O3, the sodium aluminate solution fine filtration filter aid is prepared under the conditions of a reaction temperature of 25-105 DEG C and a reaction time of 5-240 minutes. The application has the following effects: the use amount of the lime milk for filtration can be greatly reduced, and the loss of alumina, steam consumption, water consumption and power consumption caused by the large use amount of the lime milk can be reduced.

This application relates to the field of materials science and engineering, specifically disclosing a method for producing a balanced high-potassium, fully water-soluble compound fertilizer based on a high-tower process. The method includes raw material preparation, melt mixing, granulation, cooling and sieving, and finished product coating steps. This invention innovatively uses 304 austenitic stainless steel in all material contact stages, eliminating rust contamination at the source. It employs a double-layer coating process—first spraying hydrophobic oil, then applying fine powder—for surface modification. Combined with optimized melt shearing and stepped cooling parameters, the prepared compound fertilizer exhibits excellent properties such as full water solubility, no residue, high strength, and resistance to caking during storage and transportation. This invention effectively solves the problems of high water-insoluble matter and easy hygroscopic pulverization in traditional high-tower products, is fully compatible with integrated fertigation drip irrigation systems, and significantly reduces production energy consumption.