Method for extracting olefinic carbon, enriching rare earth and separating inorganic materials by solid waste liquid waste three-phase method
An inorganic material, alkene-carbon enrichment technology, applied in the field of solid waste liquid waste three-phase extraction of alkene carbon enrichment rare earth separation inorganic materials, can solve the problems of low operability, low extraction rate, high energy consumption, high material consumption, etc., to achieve The effect of broad application prospects, improved extraction rate, and easy risk control
Active Publication Date: 2019-07-09
山西中谱能源科技有限公司
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[0008] The present invention overcomes the problems of low extraction rate, high energy consumption, high material consumption, and low operability of existing coal-based solid waste extraction methods, and provides a solid waste and liquid waste three-phase method for extracting olefinic carbon, enriching rare earths, and separating inorganic materials Methods
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[0030] Such as figure 1 As shown, the method for extracting olefinic carbon, enriching rare earths, and separating inorganic materials by the three-phase method of solid waste and liquid waste is carried out according to the following steps:
[0031] Step 1) Mix raw materials (coal-based solid waste materials or liquid waste, solid waste and liquid waste in the iron and steel non-ferrous smelting industry, and rare earth concentrate or slag or liquid waste) into water, and then add to supercritical CO 2 In the reaction kettle, maintain the temperature of the reaction kettle at 283K-423K, and the pressure at 3.5MPa-35MPa, extract rare earth elements from the added raw materials, and strip olefinic carbon at the same time;
[0032] Step 2) performing solid-liquid separation on the reacted solution, and the separated solid is bulk silicon-aluminum solid material;
[0033] Step 3) Reduce and maintain the temperature of the reactor at 283K-373K, and the pressure at 0.1MPa-10MPa, a...
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The invention particularly discloses a method for extracting olefin carbon, enriching rare earth and separating inorganic materials by a solid waste liquid waste three-phase method. The method is mainly based on supercritical ScCO2 / H2O / organic fat three-phase extraction system, and the means, such as stirring, microwave, ultrasonic or heating or moderately adding acid and enhanced extraction and enhanced mass transfer, are used in an supplementary mode. When necessary, high-speed ball milling and other mechanical forces are used for stripping and enhancing the breakage and re-bonding of chemical bonds. ScCO2 phase is cooperated with H2O phase to form supercritical and acidic environment to dissolve and separate rare earth and carbon in solid waste. Complexation is carried out on safe and environmental-friendly organic lipid additives and the rare earth to extract the rare earth soluble in the H2O phase, the porous carbon or graphene carbon is basically retained in H2O, and the rare earth is transferred to CO2 phase when an organic ester is the same to form a stable CO2 extended solution phase, so that the distribution coefficient of solute in the two phases is changed, and the separation and extraction of rare earth elements and olefin carbon are completed.
Description
technical field [0001] The invention belongs to the field of coal-based solid waste treatment, and in particular relates to a method for extracting olefinic carbon, enriching rare earth and separating inorganic materials by a three-phase method of solid waste, liquid waste. Background technique [0002] my country is the world's largest producer of coal mining, coal power and coal chemical products. A large amount of solid and liquid waste will be generated in the process of coal production, processing and consumption, which has caused a huge burden on the environment. For example, the output of my country's fly ash in 2015 As high as 620 million tons, the cumulative amount over the years is even greater. Coal-based waste that is not treated in a timely and appropriate manner will pose a threat to the environment and human survival. At present, the national policy strongly supports the combustion of low-quality coal and coal gangue for power generation, which is an active res...
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IPC IPC(8): C22B7/00C22B21/00C22B59/00C01B32/05
CPCC01B32/05C22B7/006C22B21/0069C22B59/00Y02P10/122Y02P10/20Y02P20/54
Inventor 曹晏
Owner 山西中谱能源科技有限公司