Method for preparing ceramsite adsorbing material from manganese slag

Abstract

The invention discloses a method for preparing a ceramsite adsorbing material from manganese slag. The method comprises the following steps: the manganese slag is cleaned with a cleaning solution which is a mixed solution of alkali and carbonate, an adhesive is added to the cleaned manganese slag, the materials are mixed uniformly and pressed into particles, the particles are dried, calcined an cooled, and the ceramsite adsorbing material is obtained. The manganese slag is successfully used for adsorbing heavy metals in wastewater, the use value of the manganese slag can be increased, the costcan be reduced, further, waste can be changed into wealth, and environmental pollution can be reduced.

Description

technical field [0001] The invention relates to a method for preparing ceramsite adsorption material by using manganese slag, in particular to a process for comprehensive utilization of electrolytic manganese slag and further preparation of ceramsite adsorption material. Background technique [0002] In the process of producing metal manganese, the electrolytic manganese plant will discharge a large amount of solid waste - manganese slag. Manganese slag not only occupies a large amount of land and devours good fields, but also the harmful gas emitted by manganese slag directly affects the health of nearby people, which is even more serious The most important thing is: the liquid seeping from the manganese slag slowly soaks into the ground to pollute the water quality, and the harmful substances include a variety of heavy metals and excessive ammonia nitrogen. At the same time, there is a considerable amount of available manganese, nickel, nitrogen, etc. in the electrolytic m...

AI Technical Summary

Problems solved by technology

The current treatment methods of electrolytic manganese slag are direct landfilling and stacking, so there are problems such as insufficient resource utilization, low production efficiency, serious environmental pollution, and high cost of site occupation, which seriously plague electrolytic manganese production enterprises and local people.

[0003] The currently disclosed technologies for using manganese slag include: "200610050960.4 Method for producing ecological cementitious materials by using electrolytic manganese slag", which has limited utilization of manganese slag and complicated process; "91103273.8 Treatment method and products of electrolytic manganese slag ash, 99115241.7 "Electromanganese slag land treatment full-price matrix total control method", the added value of manganese slag products is low; "200610050961.9 Method for producing cement by using electrolytic manganese slag", this technology has not fully exploited the value of manganese slag; "CN101306425 A The process of comprehensive utilization of electrolytic manganese slag", this technology washes the soluble matter out and recycles, and the filter residue is used as building materials and other materials; "CN 101579685 B A method for processing and utilizing electrolytic manganese waste residue" This technology can convert electrolytic manganese waste Manganese sulfate, which is not easy to separate manganese, is converted into manganese carbonate, which can easily separate manganese; Ammonium sulfate, which is difficult to separate nitrogen, can be converted into ammonium aluminum sulfate dodecahydrate, which can easily separate nitrogen. However, the technology is complicated and the processing cost is high, so it is not suitable for large-scale industrial processing.