Red mud reuse to create new value

Bauxite resources in our country is abundant, in Shanxi, Guizhou, Henan, Guangxi, Shandong five provinces and regions with rich reserves, alumina projects focused on production, but also therefore produce more red mud, the average production of 1 ton of alumina will be accompanied by the production of about 1 ton of red mud, with the development of science and technology, you can now use red mud to do silica fertilizer, but also red mud and other materials mixed with the paving material, red mud and fly ash as raw materials The production of no-burn insulation materials, can be said to be able to make full use of it, can create objective economic benefits.

In the production and processing of alumina, it will produce a lot of wastewater and waste residue, red mud is one of them, we must know that alumina is a highly polluting industry, the production of a large number of red mud, if not properly handled, will cause pollution to the environment.

Many enterprises have not enhanced environmental awareness, red mud is mostly piled up in the red mud reservoir, looking from a distance, as if the swamp seafood in general, a wide ravine is the choice of building red mud reservoir. Random dumping of red mud, surrounded by no protection, not to mention the impermeable membrane and other environmental protection measures, red mud and natural soil large frontal contact, the residual liquid will penetrate into the soil, and then contaminated to the groundwater.

Red mud can not be used, a large number of piles, once there is a danger of dam, then the consequences are incalculable red mud is the aluminum industry to extract alumina when the polluting slag, the general average production of alumina per 1 ton, with more than 1 ton of red mud. How to utilize these red mud, how to develop new industrial waste materials, full and effective recycling of red mud has become an urgent task at this stage.

With the red mud high calcium, high silica and low iron characteristics, the use of red mud firing cement has become a welcome way to utilize the waste residue. In addition, it can also be used to produce oil well cement, red mud silicate cement, red mud silica calcium fertilizer and so on. The processing of red mud needs to be processed by drying, and then processed by raymond machine, after grinding, it can be directly applied to cement and fertilizer industry.

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