Environment-friendly and efficient tin smelting smoke dust granulating system and method

Abstract

The invention provides an environment-friendly and efficient tin smelting smoke dust granulating system and method. The system comprises a closed stock bin (1) for storing smoke dust, a granulator (2)and a bag-type dust remover (4), wherein the granulator (2) is positioned below the closed stock bin (1), and the bag-type dust remover (4) is arranged at the tail end of the granulator (4); at leasttwo feeding port (6) and an air outlet (5) are formed in the closed stock bin, each feeding port is correspondingly connected with different tin smoke dust bins through pneumatic conveying pipelines,a gasification jet bin type pump is arranged at a discharge port of each tin smoke dust stock bin, and the gasification jet bin type pumps are controlled to be started by a DCS control system; a topfeed hopper of the granulator is positioned below a discharge port at the bottom of the closed stock bin; and smoke dust particles prepared by the granulator are discharged from a bottom discharge port (3). According to the environment-friendly and efficient tin smelting smoke dust granulating system, the granulating balling rate of tin smelting smoke dust is improved, the labor intensity is reduced, the operating environment is improved, and the cleaning, environmental protection and efficient granulation of the tin smelting smoke dust are realized.

Description

technical field [0001] The invention relates to the technical field of dust recovery in the tin smelting process, in particular to a system and method for recycling and granulating the smoke and dust. Background technique [0002] The smoke and dust produced during the tin smelting process often contains high tin content, and is also rich in toxic and harmful arsenic trioxide. Therefore, centralized recycling is also required. In order to facilitate stockpiling, transshipment and further smelting treatment, tin smelting dust must be granulated and shaped. The quality of granulation of tin smelting dust is the key factor affecting the recovery of tin in the dust in the intermediate process of tin smelting. In tin smelters, semi-open disc granulation equipment is generally used at present. The dust is transported manually, and the operating environment during transportation The granulation process adopts the on-site control method, and it is difficult to achieve accurate mea...

AI Technical Summary

Problems solved by technology

The quality of granulation of tin smelting dust is the key factor affecting the recovery of tin in the dust in the intermediate process of tin smelting. In tin smelters, semi-open disc granulation equipment is generally used at present. The dust is transported manually, and the operating environment during transportation The granulation process adopts the on-site control method, and it is difficult to achieve accurate measurement and control of the amount of material and water added, and it is difficult to install dust collection equipment for the semi-open disc granulator, which has low pelleting rate and automatic control. Problems such as low cost, large loss of smoke and dust flying in the disc adding water granulation process, high labor intensity and poor operating environment

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