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Integrated recovery and utilization method of laterite nickel ore slag
The invention relates to an integrated recovery and utilization method of laterite nickel ore slag. According to the invention, the laterite nickel ore slag is used as raw material, after grinding, the raw material is mixed with fine coal and water, and a green-ball is compacted; after the green-ball is dried, iron powder and tailings are obtained after calcinations, grinding and magnetic separation; the tailings are added with dilute sulphuric acid, after standing, metal ions contained in tailings are leached, after filtering, a filtrate and filter residues are obtained; a cement clinker and an additive are added into the filter residues, after uniformly mixing and grinding, cement fine powder is obtained; a precipitating agent and a surfactant are added into the filtrate for preparing magnesium hydroxide. The invention also provides the cement fine powder. According to the method provided by the invention, the laterite nickel ore resource is utilized with high efficiency, the laterite nickel ore slag is processed for preparing the qualified cement, and simultaneously residual iron and magnesium in laterite nickel ore slag are recycled and utilized; the invention has the advantages of simple whole process, low investment, good economic benefit, and reduced pollution with environmental protection meaning.
Integrated recovery and utilization method of laterite nickel ore slag
The invention relates to an integrated recovery and utilization method of laterite nickel ore slag. According to the invention, the laterite nickel ore slag is used as raw material, after grinding, the raw material is mixed with fine coal and water, and a green-ball is compacted; after the green-ball is dried, iron powder and tailings are obtained after calcinations, grinding and magnetic separation; the tailings are added with dilute sulphuric acid, after standing, metal ions contained in tailings are leached, after filtering, a filtrate and filter residues are obtained; a cement clinker and an additive are added into the filter residues, after uniformly mixing and grinding, cement fine powder is obtained; a precipitating agent and a surfactant are added into the filtrate for preparing magnesium hydroxide. The invention also provides the cement fine powder. According to the method provided by the invention, the laterite nickel ore resource is utilized with high efficiency, the laterite nickel ore slag is processed for preparing the qualified cement, and simultaneously residual iron and magnesium in laterite nickel ore slag are recycled and utilized; the invention has the advantages of simple whole process, low investment, good economic benefit, and reduced pollution with environmental protection meaning.
Integrated recovery and utilization method of laterite nickel ore slag
FAN ZHIHUI (author) / XUE XUN (author) / CAO ZHICHENG (author) / DENG JUN (author) / WU DAOHONG (author)
2015-12-09
Patent
Electronic Resource
English
IPC:
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C04B
Kalk
,
LIME
/
C22B
PRODUCTION OR REFINING OF METALS
,
Gewinnen oder Feinen von Metallen
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