Nuclear graphite based on microcrystalline graphite as raw material and preparation method thereof
A technology of microcrystalline graphite and nuclear graphite, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of no report and research of aphanitic graphite, and achieve favorable roasting and low isotropy ratio, the effect of high bending strength
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Embodiment 1
[0035] The present embodiment provides a method for preparing nuclear graphite based on microcrystalline graphite as a raw material, comprising the following steps:
[0036] S1. Raw ore treatment: crush the microcrystalline graphite raw ore, and then carry out deep grinding on the microcrystalline graphite raw ore, and obtain the material with a fineness of -0.074mm through grinding, and the content of the material with a grinding fineness of -0.074mm accounts for 90% % of the raw ore samples are subjected to flotation, using a roughing process, four selections, and a sweeping process, followed by drying and magnetic separation to obtain microcrystalline graphite with a fixed carbon content of 90%;
[0037] In the raw ore treatment of this embodiment, the raw ore of microcrystalline graphite is Lutang graphite, wherein the moisture is 2.4%, the volatile matter is 2.99%, the ash content is 18.37%, and the carbon content is 78.64%;
[0038] S2. Purification by acid leaching:
...
Embodiment 2
[0053] The present embodiment provides a method for preparing nuclear graphite based on microcrystalline graphite as a raw material, comprising the following steps:
[0054] S1. Raw ore treatment: crush the microcrystalline graphite raw ore, and then carry out deep grinding on the microcrystalline graphite raw ore, and obtain the material with a fineness of -0.074mm through grinding, and the content of the material with a grinding fineness of -0.074mm accounts for 90% % of the raw ore samples are subjected to flotation, using a roughing process, four selections, and a sweeping process, followed by drying and magnetic separation to obtain microcrystalline graphite with a fixed carbon content of 90%;
[0055] In the raw ore treatment of this embodiment, the raw ore of microcrystalline graphite is Lutang graphite, wherein the moisture is 2.4%, the volatile matter is 2.99%, the ash content is 18.37%, and the carbon content is 78.64%;
[0056] S2. Purification by acid leaching:
...
Embodiment 3
[0068] The present embodiment provides a method for preparing nuclear graphite based on microcrystalline graphite as a raw material, comprising the following steps:
[0069] S1. Raw ore treatment: crush the microcrystalline graphite raw ore, and then carry out deep grinding on the microcrystalline graphite raw ore, and obtain the material with a fineness of -0.074mm through grinding, and the content of the material with a grinding fineness of -0.074mm accounts for 90% % of raw ore samples are subjected to flotation, such as figure 1 As shown, a roughing process is adopted for four times of selection and one sweeping process, followed by drying and magnetic separation to obtain microcrystalline graphite with a fixed carbon content of 90%;
[0070] In the raw ore treatment of this embodiment, the raw ore of microcrystalline graphite is Lutang graphite, wherein the moisture is 2.4%, the volatile matter is 2.99%, the ash content is 18.37%, and the carbon content is 78.64%;
[007...
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