Method and system for pretreating lateritic nickel ore
A technology for laterite nickel ore and pretreatment, applied in the metallurgical field, can solve the problems of large water content and difficult to handle, and achieve the effect of good water removal effect, simple process flow and simple equipment.
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Embodiment 1
[0032] (1) if figure 2 As shown, wet laterite nickel ore (average nickel 1.87%, iron 12%, crystal water 21%, attached water 15%, containing 40% stones, of which more than half diameter is more than 300mm, bonded in laterite nickel ore) , enter the 1.2m×6m apron feeder 1 (steel plate chain belt structure) through a forklift and enter the B1000 feeding belt. The raw materials are sent to the 1.8m×5.4m vibrating screen 2 (screen hole 200×200mm), and the high-nickel lump ore with a diameter greater than 200mm is screened out, and the lump ore is transported to the jaw crusher 7 to be crushed to less than 150mm.
[0033] (2) The laterite nickel ore with less than 200mm of vibrating sieve enters the cylindrical drying kiln 3 of 3.5×40m (diameter×length) through the belt conveyor. The inner wall of the drying kiln body 30 is evenly distributed with 20cm high , a steel material baffle 31 with a width of 25 cm, and the distance between each material baffle and the surrounding materia...
Embodiment 2
[0038] In the steps (1), (3), and (4), the lump ore is not subjected to jaw crushing, and the rest are the same as steps (1) to (4) of Embodiment 1.
[0039] (5) The aforementioned lump ore is transported to the same jaw crusher 7 through a belt, crushed to a diameter of 50-100 mm, and then enters a hammer crusher 8, hammered to a diameter of less than 10 mm, and stacked for standby, such as image 3 shown.
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