Treatment method of laterite-nickel ore
A lateritic nickel ore and treatment method technology, applied in the field of metallurgy, can solve the problems of serious environmental pollution, complex treatment process, high equipment requirements, etc., achieve good comprehensive benefits and avoid environmental pollution
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Embodiment 1
[0066] A laterite nickel ore with a nickel grade of 1.31% by weight and a total iron content of 23.75% by weight is used. According to the ratio of laterite nickel ore: carbon black: additive = 100:12:10, after mixing evenly, use a double-roller high-pressure briquetting machine to make agglomerates, and distribute the dried carbon-containing pellets into the rotary hearth furnace through the distribution device , the carbon-containing pellets are reduced in a regenerative rotary hearth furnace, the reduction temperature is 1500°C, and the reduction time is 60 minutes. The metallized pellets discharged from the discharge port are crushed and dry-type magnetic separation to obtain the nickel grade of nickel-iron particles. It is 14.16% by weight. At the same time, in order to improve the recovery rate of nickel, the tailings were subjected to wet grinding and separation in an electric furnace, and the nickel grade of the obtained nickel-iron alloy was 8.33% by weight. The tota...
Embodiment 2
[0068] A laterite nickel ore with a nickel grade of 0.72% by weight and a total iron content of 41.93% by weight is used. According to the proportion of laterite nickel ore: carbon black: additive = 100:26:17, after mixing evenly, use a double-roller high-pressure briquetting machine to make agglomerates, and distribute the dried carbon-containing pellets into the rotary hearth furnace through the distribution device , the carbon-containing pellets are reduced in a regenerative rotary hearth furnace, the reduction temperature is 1450°C, and the reduction time is 45 minutes. The metallized pellets discharged from the discharge port are crushed and dry-type magnetic separation to obtain the nickel grade of nickel-iron particles. It is 4.11% by weight. At the same time, in order to improve the recovery rate of nickel, the tailings were subjected to wet grinding and then melted in a non-electric furnace. The nickel grade of the nickel-iron alloy obtained by melting was 6.07% by we...
Embodiment 3
[0070] A laterite nickel ore with a nickel grade of 1.71% by weight and a total iron content of 11.62% by weight is used. According to the proportion of laterite nickel ore: carbon black: additive = 100:5:20, after mixing evenly, use a double-roller high-pressure briquetting machine to make agglomerates, and distribute the dried carbon-containing pellets into the rotary hearth furnace through the distribution device , the carbon-containing pellets are reduced in a regenerative rotary hearth furnace, the reduction temperature is 1550°C, and the reduction time is 105min. The metallized pellets discharged from the discharge port are crushed and dry-type magnetic separation to obtain the nickel grade of nickel-iron particles. It is 30.47% by weight. At the same time, in order to improve the recovery rate of nickel, the tailings were subjected to wet grinding and then melted in a non-electric furnace. The nickel grade of the nickel-iron alloy obtained by melting was 16.58% by weigh...
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