Sintered ceramsite adopting tailings generated during germanium extraction of lignite as main raw material and preparation method of sintered ceramsite
A technology of main raw materials and tailings, applied in the field of sintered ceramsite and its preparation, can solve the problems of polluting the environment and occupying land, and achieve the effects of good product performance, inhibition of strength reduction and environmental friendliness
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Embodiment 1
[0022] Example 1: The sintered ceramsite with lignite germanium extraction tailings as the main raw material is made from the following raw materials, and the raw materials and weight percentages are 80wt% lignite germanium extraction tailings, kaolin 10wt%, and water 10wt%.
[0023] The preparation steps of sintering ceramsite with germanium tailing slag extracted from lignite are:
[0024] (1) Pretreatment of raw materials: drying lignite germanium extraction tailings and kaolin to a moisture content of 2wt%, and then crushing to a particle size of less than 0.074mm, and raw materials with a particle size of less than 0.074mm>80%;
[0025] (2) Stirring and mixing: put 80kg lignite germanium extraction tailings and 10kg kaolin into a mixer and mix for 10 minutes, then add 10kg of water, stir again for 15 minutes, and mix evenly to obtain a mixture;
[0026] (3) Molding: Put the mixture in a disc pelletizer to make pellets to obtain a ceramsite green body. The particle siz...
Embodiment 2
[0032] Example 2: The sintered ceramsite with lignite germanium extraction tailings as the main raw material is made from the following raw materials, and the raw materials and weight percentages are 55wt% lignite germanium extraction tailings, 30wt% kaolin, and 15wt% water.
[0033] The preparation steps of sintering ceramsite with germanium tailing slag extracted from lignite are:
[0034] (1) Pretreatment of raw materials: drying lignite germanium extraction tailings and kaolin to a moisture content of 1wt%, and then crushing to a particle size of less than 0.074mm, and raw materials with a particle size of less than 0.074mm>80%;
[0035] (2) Stirring and mixing: put 55kg lignite germanium extraction tailings and 30kg kaolin into a mixer and mix for 15 minutes, then add 15kg of water, stir again for 10 minutes, and mix evenly to obtain a mixture;
[0036] (3) Molding: Put the mixture in a disc pelletizer to make pellets to obtain a ceramsite green body. The particle size of...
Embodiment 3
[0041] Example 3: The sintered ceramsite which uses lignite germanium extraction tailings as the main raw material is made from the following raw materials, and the raw materials and weight percentages are 70wt% lignite germanium extraction tailings, 25wt% kaolin, and 5wt% water.
[0042] The preparation steps of sintering ceramsite with germanium tailing slag extracted from lignite are:
[0043] (1) Pretreatment of raw materials: drying lignite germanium extraction tailings and kaolin to a moisture content of 1.5wt%, and then crushing to a particle size of less than 0.074mm, and raw materials with a particle size of less than 0.074mm>80%;
[0044] (2) Stirring and mixing: put 70kg lignite germanium extraction tailings and 25kg kaolin into a mixer and mix for 12 minutes, then add 5kg of water, stir again for 13 minutes, and mix evenly to obtain a mixture;
[0045] (3) Molding: Put the mixture in a disc pelletizer to make pellets to obtain a ceramsite green body. The particle ...
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