Iron phosphate, as the raw material of the cathode material of lithium-ion batteries and electronic material products, has a broad market prospect with the development of the battery industry and the electronics industry. What mill is used for iron phosphate production? Which type of iron phosphate grinding mill has the highest fineness and output? Guilin Hongcheng, as a manufacturer of iron phosphate mills, will give you specific analysis and answers today.
Ferric phosphate is also known as ferric orthophosphate and ferric phosphate (ferrous iron ions are ferrous phosphate), with a specific gravity of 2.74. The ferric phosphate existing in nature is also called blue iron ore. Iron in ferric phosphate is trivalent iron, mostly dihydrate , In addition to sulfuric acid, it is insoluble in other acids, almost insoluble in water, acetic acid, alcohol. It is a white, off-white monoclinic crystal powder, which is the salt of iron salt solution and sodium phosphate, and the iron in it is positive trivalent. It has the characteristics of non-toxic, low cost and stable structure. Iron phosphate has many different structures, mainly including isophosphorite, monoclinic, a-quartz structure, orthorhombic and amorphous structures. It has a wide range of application fields, and is used in catalysts, additives, and raw materials for electrode material synthesis.
Ferric phosphate production method: in the presence of oxidants (hydrogen peroxide, sodium chlorate, etc.), treat ferrous salts (such as ferrous nitrate, ferrous sulfate, etc.) Add alkali to adjust the Ph value to 2~6, that is, ferric phosphate is precipitated.
1. Ferrous nitrate method: first heat the ferrous nitrate solution to 95~110%C to dissolve it completely, and then add a decontamination agent and a heavy metal removal agent to purify the solution in the presence of a chemical agent, filter to remove diuretic and heavy metals Impurities, add the refined ferrous nitrate solution into the reactor, add the purified concentrated phosphoric acid and pure ferric phosphate seeds under stirring, heat and react for 4 hours under constant stirring, and generate ferric phosphate precipitates, which are filtered, washed, Drying to obtain edible iron phosphate finished products.
2. Ferrous sulfate method: first add ferrous sulfate to distilled water and heat to dissolve it all. In the presence of an oxidant, add a decontamination agent and a heavy metal removal agent to purify the solution, filter, add the refined ferrous sulfate solution to the reactor, and Add the purified concentrated phosphoric acid under stirring, then add refined sodium chlorate solution, react at 85°C for 30 minutes, then slowly add edible caustic soda solution, adjust the Ph value to 2~6, and precipitate iron phosphate. After filtering, washing and drying, the edible ferric phosphate product is obtained.
Battery-grade iron phosphate is a high-purity iron phosphate product. Due to its very high process standards, it is difficult to manufacture and the process is quite complicated. The iron phosphate produced by most manufacturers can only be used as ceramics due to too many impurities. Grade iron phosphate is used; while battery grade iron phosphate needs to be used in the preparation of iron phosphate mill, the existing iron phosphate mill grinding effect is not good, thus affecting the quality and output of iron phosphate.
So, what mill is used for iron phosphate production? Which type of iron phosphate mill has the highest fineness and output? Guilin Hongcheng HLMX ultra-fine vertical mill is an iron phosphate mill that can realize grinding, drying and sorting in one, and can retain the color and purity of materials. The machinable fineness is 3-22μm, and the output is equivalent to more than 5 micro-powder mills. The production of products with the same fineness grade can save 30-50% energy than ordinary mills, which is more energy-saving. The finished product has narrow particle size distribution, small cut point, good fluidity and strong adaptability. If you have purchase needs of iron phosphate mill, welcome to leave us a message for equipment details.