Method for preparing ecological active residues by treating electrolytic manganese residues by virtue of rotary kiln plant

Abstract

The method for preparing ecological active residues by treating electrolytic manganese residues by virtue of a rotary kiln plant mainly comprises the following steps: (1) preparing materials; (2) proportioning the materials; proportioning 50-75% of electrolytic manganese residues, 5-15% of stone coal, 19.7-50.0% of waste stone residues and 0.3-2.0% of an alteration agent by a microcomputer; (3) pulverizing: feeding the materials into a raw material vertical mill system to be mixed and pulverized; and (4) calcining: feeding the powder into a dry-method rotary kiln preheater system and feeding the powder into the rotary kiln to be calcined for 15-60 minutes at 1150-1350 DEG C to obtain the ecological active residues. By virtue of the method provided by the invention, active residues and active residue powder with relatively high additional value and wide use can be produced by effectively utilizing the electrolytic manganese residues and other wastes with a low cost.

Description

technical field [0001] The invention relates to a method for preparing active slag by treating electrolytic manganese slag with a rotary kiln plant. Background technique [0002] my country is the world's largest manganese industry country, with pure manganese output accounting for more than 95% of the world's total. The waste slag discharged during the manganese industry processing is manganese slag, including "manganese slag" and "manganese slag". Manganese slag is a kind of water-quenched blast furnace slag formed by water-quenching high-temperature slag discharged during the smelting process of ferromanganese alloy or silicon-manganese alloy. One ton of ferromanganese alloy can produce 2 to 2.5 tons of manganese slag, and its activity is only Blast furnace slag inferior to pig iron smelting, superior to low-calcium fly ash, can be directly used as cement admixture or slag powder production. Manganese slag is the waste slag discharged during the production of pure mangan...

AI Technical Summary

Problems solved by technology

[0017] However, the above-mentioned technical solutions have problems such as poor economy or small consumption or obvious secondary pollution, which objectively cannot solve the problem of recycling electrolytic manganese slag

[0018] The above-mentioned existing technical approaches or technical methods on the management and comprehensive utilization of manganese slag have objectively obtained certain research results or application results, and the management of manganese slag has also been included in the national "863 Plan" subject And the results have been checked and accepted. However, so far, except that the manganese slag can be better utilized due to the lack of sources of admixture slag in cement production, the actual comprehensive utilization effect of the largest electrolytic manganese slag is not satisfactory, and a large amount is still simply used. Buried or discarded in culverts and ravines, it has a great impact on the ecological environment of groundwater, soil and surface water, and even long-term hidden dangers. Resource Utilization Issues