Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for extracting lithium from lepidolite
The invention discloses a method for extracting lithium from lepidolite, which comprises the following steps: uniformly mixing lepidolite, coke powder, carbide slag and sodium cellulose according to a mass ratio of 1: (0.25-0.6): (0.25-0.6): (0.2-0.4), obtaining a spherical material through a pelletizer, carrying out microwave drying treatment on the spherical material to remove moisture, and carrying out reduction calcination at 700-1050 DEG C, water is added into the clinker according to the liquid-solid ratio of 2: 1-5: 1 for ball milling treatment, leaching of lithium is completed while ore grinding is conducted, then solid-liquid separation is conducted through filter pressing to obtain a lithium-containing solution, and the lithium-containing solution is subjected to purification and impurity removal, concentration and lithium precipitation, carbonization and refining, drying and smashing to obtain a battery-grade lithium carbonate product. According to the method, microwave drying and reduction calcination are adopted, so that the materials can be quickly and uniformly heated, the reaction efficiency is improved, the energy consumption is reduced, the resource utilization of the waste residues is realized, and the environmental pollution is reduced.
本发明公开了一种锂云母提锂的方法，包括将锂云母与焦粉、电石渣、纤维素酸钠的按照质量比为1：(0.25‑0.6)：(0.25‑0.6)：(0.2‑0.4)混合均匀，通过造球机得到球状物料：将所述球状物料进行微波干燥处理去除水分，在700‑1050℃的温度下还原煅烧，制备得到熟料：将所述熟料按照液固比为2:1‑5:1加水进行球磨处理，磨矿的同时完成锂的浸出，然后通过压滤进行固液分离得到含锂溶液：将所述含锂溶液经过净化除杂、浓缩沉锂、碳化精制、干燥粉碎后得到电池级碳酸锂产品。本发明采用微波干燥和还原煅烧，能够快速、均匀地加热物料，提高反应效率，降低能耗，实现了废渣的资源化利用，减少了环境污染。
Method for extracting lithium from lepidolite
The invention discloses a method for extracting lithium from lepidolite, which comprises the following steps: uniformly mixing lepidolite, coke powder, carbide slag and sodium cellulose according to a mass ratio of 1: (0.25-0.6): (0.25-0.6): (0.2-0.4), obtaining a spherical material through a pelletizer, carrying out microwave drying treatment on the spherical material to remove moisture, and carrying out reduction calcination at 700-1050 DEG C, water is added into the clinker according to the liquid-solid ratio of 2: 1-5: 1 for ball milling treatment, leaching of lithium is completed while ore grinding is conducted, then solid-liquid separation is conducted through filter pressing to obtain a lithium-containing solution, and the lithium-containing solution is subjected to purification and impurity removal, concentration and lithium precipitation, carbonization and refining, drying and smashing to obtain a battery-grade lithium carbonate product. According to the method, microwave drying and reduction calcination are adopted, so that the materials can be quickly and uniformly heated, the reaction efficiency is improved, the energy consumption is reduced, the resource utilization of the waste residues is realized, and the environmental pollution is reduced.
本发明公开了一种锂云母提锂的方法，包括将锂云母与焦粉、电石渣、纤维素酸钠的按照质量比为1：(0.25‑0.6)：(0.25‑0.6)：(0.2‑0.4)混合均匀，通过造球机得到球状物料：将所述球状物料进行微波干燥处理去除水分，在700‑1050℃的温度下还原煅烧，制备得到熟料：将所述熟料按照液固比为2:1‑5:1加水进行球磨处理，磨矿的同时完成锂的浸出，然后通过压滤进行固液分离得到含锂溶液：将所述含锂溶液经过净化除杂、浓缩沉锂、碳化精制、干燥粉碎后得到电池级碳酸锂产品。本发明采用微波干燥和还原煅烧，能够快速、均匀地加热物料，提高反应效率，降低能耗，实现了废渣的资源化利用，减少了环境污染。
Method for extracting lithium from lepidolite
一种锂云母提锂的方法
ZHANG JUNJUN (Autor:in) / ZHAO JUN (Autor:in)
21.01.2025
Patent
Elektronische Ressource
Chinesisch
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