Preparation method of laterite nickel ore pellet
A technology of lateritic nickel ore and pellets, which is applied in the field of metallurgy, can solve the problems of difficult large-scale equipment, dust pollution, high energy consumption, etc., and achieve the effects of reducing drying costs, protecting the environment, and low production costs
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Embodiment 1
[0029] see figure 1 and figure 2 , a preparation method of laterite nickel ore pellets, comprising the steps of:
[0030] 1) Grinding and grading: Feed the laterite nickel ore 1 with a particle size of less than 350mm into the semi-autogenous mill 2, and the discharged ore is classified by the linear vibrating screen 3, and the material larger than 10mm is transported to the crusher 5 by the belt 4 and then returned to the semi-autogenous mill for crushing. Self-grinding machine 2; materials less than 10 mm are sent to cyclone 8 for classification through pump box 6 and slurry pump 7, and the cyclone sinks into ball mill 9 for grinding, and the cyclone overflow is the qualified particle size (less than 0.5 mm) pulp, the pulp moisture content is about 60%;
[0031] 2) Concentration and dehydration: For qualified pulp, thickener 10 is used to concentrate first, and then horizontal spiral sedimentation centrifuge 11 is used for dehydration to obtain materials with a moisture c...
Embodiment 2
[0034] see figure 1 and image 3 , a preparation method of laterite nickel ore pellets, comprising the steps of:
[0035] 1) Grinding and grading: Feed the laterite nickel ore 1 with a particle size of less than 350 mm into the semi-autogenous mill 2, and the discharged ore is classified by the double-layer vibrating screen 19, and the material larger than 10 mm is transported to the crusher 5 through the belt 4 and returned after crushing Semi-autogenous mill 2; materials of 3-10mm enter ball mill 9 for grinding; materials less than 3mm and the ore discharge of ball mill 9 are sent to cyclone 8 for classification through pump box 6 and slurry pump 7, and cyclone settling sand Enter the ball mill 9 to grind the ore, and the cyclone overflow is the qualified particle size (less than 0.5mm) slurry, and the moisture content of the slurry is about 65%;
[0036] 2) Concentration and dehydration: For qualified pulp, thickener 10 is used to concentrate first, and then belt filter 2...
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