A method for producing active admixtures by treating electrolytic manganese slag with a non-homogenization process

Abstract

A method for producing active admixture materials by treating electrolytic manganese slag with a non-homogenization process, comprising the following steps: (1) continuously feeding electrolytic manganese slag into the kiln tail smoke chamber through an air lock feeding system; (2) adjusting minerals The raw material powder is preheated by the preheater system into the calciner, and then continuously sent into the kiln tail smoke chamber, and mixed with electrolytic manganese slag; (3) The mixture of electrolytic manganese slag and mineral adjustment material powder enters through the kiln tail smoke chamber In the rotary kiln, the kiln tail smoke chamber and the rotary kiln are further mixed and calcined at the same time to obtain cooked slag; (4) The obtained cooked slag is discharged from the kiln head of the rotary kiln into a grate cooler for cooling to obtain active admixtures. The invention utilizes the dry-process rotary kiln cement production line equipment equipped with an air lock feeding system, adopts a non-homogenization process to process the electrolytic manganese slag to produce active admixtures, does not need to dry and grind the electrolytic manganese slag, and can save a lot of energy consumption; effective use of silicon, aluminum, iron, calcium and calcium sulfate and other components in electrolytic manganese slag; avoiding environmental pollution by volatile pollutants; low production investment.

Description

technical field

[0001] The invention relates to a method for treating electrolytic manganese slag by non-homogenization process, in particular to a method for producing admixture material by treating electrolytic manganese slag by non-homogenization process. Background technique

[0002] Electrolytic manganese slag is a neutral or weakly acidic waste residue produced by solid-liquid separation (pressure filtration) in the process of manganese ore acid leaching (combination) to prepare manganese electrolyte. At present, my country's electrolytic manganese production capacity has exceeded 2 million tons, and the amount of acid leaching waste discharged per ton of electrolytic manganese production is 5 to 7 tons. When using lower-grade manganese ore raw materials, each ton of electrolytic manganese can produce up to 10 tons of slag. , the annual actual accumulation or burial amounted to hundreds of millions of tons, and the annual new increment reached tens of millions of tons. ...