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Composite precipitator for laterite-nickel ore wet refining and laterite-nickel ore wet refining method
The invention discloses a composite precipitant for laterite-nickel ore wet refining and a laterite-nickel ore wet refining method, the composite precipitant for laterite-nickel ore wet refining is a mixture composed of magnesium oxide and sodium hydroxide, and the mass fraction of the sodium hydroxide in the composite precipitant is greater than 0 and less than or equal to 99%. The wet extraction method of the laterite-nickel ore comprises the following steps: adding a composite precipitator into an acidic solution to be extracted directly or after size mixing, and stirring to enable the composite precipitator to fully react with the acidic solution to be extracted; concentrating the reacted mixed solution to obtain clear liquid and solid-containing slurry; and filtering and washing the solid-containing slurry to obtain a solid containing nickel hydroxide, cobalt hydroxide or nickel hydroxide-cobalt hydroxide, thereby realizing precipitation of nickel, cobalt or nickel cobalt. According to the composite precipitator and the laterite-nickel ore wet extraction method, the process is simple, the cost is low, the process is easy to control, the nickel hydroxide (and cobalt hydroxide) precipitate is easy to settle and filter, the production efficiency can be remarkably improved, and the energy consumption is reduced.
本发明公开一种红土镍矿湿法提炼用复合沉淀剂及红土镍矿湿法提炼方法，红土镍矿湿法提炼用复合沉淀剂由氧化镁和氢氧化钠组成的混合物，复合沉淀剂中氢氧化钠的质量分数大于0且小于或等于99％。红土镍矿湿法提炼方法，包括将复合沉淀剂直接或者调浆后，加入到酸性待提炼溶液中，搅拌，使复合沉淀剂与酸性待提炼溶液充分反应；反应后的混合溶液浓缩后得到清液及含固浆料；含固浆料经过滤并水洗，得到含有氢氧化镍、氢氧化钴、或氢氧化镍‑氢氧化钴的固体，从而实现镍、钴或镍钴的沉淀。本发明的复合沉淀剂及红土镍矿湿法提炼方法，工艺简单、成本低廉、过程易于控制、氢氧化镍(及氢氧化钴)沉淀易沉降和过滤，能够显著提升生产效率，降低能耗。
Composite precipitator for laterite-nickel ore wet refining and laterite-nickel ore wet refining method
The invention discloses a composite precipitant for laterite-nickel ore wet refining and a laterite-nickel ore wet refining method, the composite precipitant for laterite-nickel ore wet refining is a mixture composed of magnesium oxide and sodium hydroxide, and the mass fraction of the sodium hydroxide in the composite precipitant is greater than 0 and less than or equal to 99%. The wet extraction method of the laterite-nickel ore comprises the following steps: adding a composite precipitator into an acidic solution to be extracted directly or after size mixing, and stirring to enable the composite precipitator to fully react with the acidic solution to be extracted; concentrating the reacted mixed solution to obtain clear liquid and solid-containing slurry; and filtering and washing the solid-containing slurry to obtain a solid containing nickel hydroxide, cobalt hydroxide or nickel hydroxide-cobalt hydroxide, thereby realizing precipitation of nickel, cobalt or nickel cobalt. According to the composite precipitator and the laterite-nickel ore wet extraction method, the process is simple, the cost is low, the process is easy to control, the nickel hydroxide (and cobalt hydroxide) precipitate is easy to settle and filter, the production efficiency can be remarkably improved, and the energy consumption is reduced.
本发明公开一种红土镍矿湿法提炼用复合沉淀剂及红土镍矿湿法提炼方法，红土镍矿湿法提炼用复合沉淀剂由氧化镁和氢氧化钠组成的混合物，复合沉淀剂中氢氧化钠的质量分数大于0且小于或等于99％。红土镍矿湿法提炼方法，包括将复合沉淀剂直接或者调浆后，加入到酸性待提炼溶液中，搅拌，使复合沉淀剂与酸性待提炼溶液充分反应；反应后的混合溶液浓缩后得到清液及含固浆料；含固浆料经过滤并水洗，得到含有氢氧化镍、氢氧化钴、或氢氧化镍‑氢氧化钴的固体，从而实现镍、钴或镍钴的沉淀。本发明的复合沉淀剂及红土镍矿湿法提炼方法，工艺简单、成本低廉、过程易于控制、氢氧化镍(及氢氧化钴)沉淀易沉降和过滤，能够显著提升生产效率，降低能耗。
Composite precipitator for laterite-nickel ore wet refining and laterite-nickel ore wet refining method
一种红土镍矿湿法提炼用复合沉淀剂及红土镍矿湿法提炼方法
TIAN XIAOLI (author) / LEE JI-HOON (author) / WANG JIA (author) / FENG RUNTANG (author) / JIA TING (author) / SHI XUWU (author) / MA ZIXIONG (author) / ZHANG ZHANPENG (author) / WANG XUEPEI (author) / ZHANG CHANGJUN (author)
2024-11-19
Patent
Electronic Resource
Chinese
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