Tailings processing technology

Tailings is refers to the mining enterprises in the mineral processing after the completion of the discharge of waste slag, more outside in the form of mud, accumulate over a long period form the tailings. Tailings covers an area of big, but very safe hidden trouble, the other is rich in tailings of the mineral processing reagents in the tailings water infiltration into the underground, to the environment, groundwater can also cause a great deal of pollution. So tailing processing is a major problem in front of mine producers.
Tailings is unleashed a certain technical and economic condition of mining enterprises of the "waste", but most of them contain a variety of color, black, rare, rare earth and non-metallic minerals, etc., are precious secondary resources, when the technical and economic conditions allow, can be effective development again. Tailings sand making profits, how to deal with?
At present, the processing method of tailings is as a general mining, underground mining goaf filling the water sand filling or cemented filling aggregate; Or directly on the tailings piled field covering from land, crops or trees. Tailings actually the most economic benefit of treatment or tailings as building material, sand and raw materials, such as processed tailings can be aerated concrete, cement, tile, refractory material, glass, ceramic, concrete aggregate of raw materials, such as for tail ore sand can replace part of the mechanism used to make concrete, road construction, road surface material, etc.

At present for the comprehensive utilization of tailings resources at home and abroad can be summarized as the following several ways:

1. The first thing to do tailings resources comprehensive recycling useful components, the use of advanced technology and reasonable process for reelection tailings, maximize the recycling useful components of tailings, so that we can further reduce the number of tailings. Some concentrator to develop in the direction of no tailings.
2. The tailings used for mining, underground mining goaf filling the water sand filling or aggregate of cemented filling. Tailings as goaf filling material is used, is the ideal filling process of full tailings filling process, but it is still at the experimental research stage. Is the use of tailings are used in the production of coarse grain as goaf filling. Dressing (belt conveyor) factory preparation section were classified tailings discharge after send, send the coarse sand part underground mined-out area, and the fine grained part into the tailings storage. The tailing treatment methods have been applied at home and abroad.
3. The tailings sand machine (system) was used as the raw material of building materials, production of backfilling materials as cement, silicate, aerated concrete, brick, tile, cast stone, refractory material, glass, ceramic, concrete aggregate, microcrystalline glass, slag, tile, foam glass and the materials.
4. The backfilling materials in road construction, road surface material, non-slip materials, such as coast from land.
5. On the tailings piled field covering from land, crops or trees.
6. Within the tailings stacked tailings are specially built, this is the most currently the most widely used method of tailings disposal of concentrator.