2results about How to "Low pyrolysis temperature" patented technology

This invention provides a process and equipment for recovering valuable components from cathode carbon blocks using binary molten salt-assisted roasting, relating to the field of solid waste treatment and resource recycling technology. The process includes the following steps: Step S1: The aluminum electrolysis cathode carbon blocks are coarsely crushed using a crusher, then pulverized using a ball mill, sieved, and dried in an oven for later use. Step S2: Analytical grade sodium chloride and carbonate are mixed according to a specific mass ratio. The mixed salt is placed in a muffle furnace and heated for a period of time to form a uniform binary eutectic molten salt. After cooling, it is ground into a fine powder using an agate crucible for later use. This solution ultimately achieves efficient removal of toxic impurities such as fluorides and cyanides from waste cathode carbon blocks in aluminum electrolysis cells and resource recovery of valuable components such as graphite carbon by innovatively employing a sodium chloride-sodium carbonate binary molten salt system assisted by low-temperature roasting, combined with subsequent water leaching and hydrothermal acid leaching treatment steps.

The application provides a preparation and application of an anti-aging starch-based emulsifier, wherein the preparation method comprises five steps of amorphization, oxygen-free pyrolysis, low-temperature gelatinization, centrifugal separation and spray drying; the amorphization and overheated steam treatment are combined, the pyrolysis efficiency and solubility of starch are improved, and browning and peculiar smell are prevented; the starch granules after pyrolysis are subjected to low-temperature gelatinization and centrifugal separation to obtain a soluble starch solution with suitable molecular weight and chain length distribution, and the starch granules form granular molecular clusters in water, adsorb and stabilize the oil-water interface; due to strong adsorption force, the starch molecular clusters are difficult to be widely crosslinked, and the aging of the starch emulsifier is effectively inhibited; the starch-based emulsifier provided by the application has the characteristics of anti-aging and pure naturalness, and is suitable for food, pharmaceutical and other industries.