40results about How to "Small mesh" patented technology

The invention discloses a process and a system for preparing high-strength blocky active lime from carbide slag. The process comprises the steps: (1) crushing carbide slag in a drying crusher and enabling the crushed carbide slag to enter a multistage preheater after being dried by high-temperature dry gas, wherein the high-temperature dry gas comes from a gas burning furnace and a cyclone separator, the high-temperature gas from the gas burning furnace and the cyclone separator is taken as a heat source of the multistage preheater, and the high-temperature gas is generated by burning calciumcarbide furnace gas in the gas burning furnace to provide heat; (2) enabling the carbide slag preheated by the multi-stage preheater and high-temperature gas to enter a decomposing furnace together tobe calcined and decomposed, introducing air into the decomposing furnace, and taking the calcium carbide furnace gas and heat generated by burning of the calcium carbide furnace gas as a heat source;(3) collecting calcium oxide obtained by calcining and decomposing through the cyclone separator, removing impurities, feeding an obtained product into a finished product ash bin, pressing the product into blocky active lime, and feeding the blocky active lime into a finished product warehouse; and enabling high-temperature gas obtained after calcination decomposition to enter the drying crusherand the multi-stage preheater again through the cyclone separator.