Atomization technology is expected to be applied to the evaporation of rare earth concentrates high salt wastewater evaporation

In recent years, Baotou Steel Rare Earth in vigorously promoting the " three centralized " project , while the rare earth industry put forward innovative zero discharge of wastewater business goals, is of great significance , is also a very difficult task .

In terms of rare earth " three wastes" policy research, basic technology research Baotou Rare Earth Research Institute environmental chamber , "three centralized " project has done a lot of work . However, the high salinity wastewater rare earth smelting separation process produces a large number of ( transformation of wastewater, waste salt precipitation were higher than 3% ) is never cost-effective approach.

Recently, the Baotou Rare Earth Research Institute of Leadership and Environmental Laboratory Fluid Technology Co., Ltd. Beijing think to go to a technical staff located in Ordos City of Inner Mongolia Yitai Zhungeer Xuejiawan Coal Liquefaction Co., Ltd. , visit wastewater evaporation device applications situation .

Evaporation ponds - atomized water evaporation is increased in the conventional atomizing spraying device based on the evaporation pond , water will evaporate again in the atomized spray pond , compared with the conventional evaporation ponds evaporation efficiency can be increased 14 times . The technology has evaporated fast, low- cost tons of water treatment equipment clogging, operation and maintenance simple. This technology products for more than ten years of experience in industrial applications , the technology is mature abroad. 2013 onwards in the domestic promotion . Yitai Coal Liquefaction Company , application of this technology evaporating water ( the company with rare earth smelting enterprises wastewater effluent is similar , with a high salt containing ammonia , COD content and high ) recovery of salt, as the country's first case of industrial applications , running well . After Beijing think Fluid Technology Co. technicians preliminary accounting , evaporation ponds - atomized water evaporation processing of rare earth , with an average consumption of about 4 tons of water evaporate 1 kWh of electricity , equivalent to running costs about 2 yuan / ton waste . Baotou Rare Earth , compared with the current wastewater enterprise wide application of three -effect evaporation technique , the evaporation efficiency is greatly improved , operating costs can be reduced by 100 times. However, the evaporation pond - atomization evaporation technology to promote enterprise in Baotou Rare Earth , there are still shortcomings of its footprint is too large evaporation ponds . To produce 6,000 cubic meters of wastewater per day in transition , 3400 cubic meters of wastewater precipitation gauge, designed evaporation pond area of ​​approximately 352,500 square meters .

Currently, the Baotou Rare Earth Research Institute positive environmental chamber magnesium soap restructuring wastewater, cerium carbonate precipitation supernatant two kinds of wastewater treatment target , and Fluid Technology Co., Ltd. Beijing think further explore the rare high- salt wastewater evaporation ponds - atomization evaporation scheme . More accurate data in order to get water and reduce evaporation pond footprint solution will provide a viable technical solution for the Baotou Rare Earth and Rare Earth to try to resolve problems encountered in high-salt wastewater treatment currently .


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