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.

Active Publication Date: 2012-11-21
GUANGXI SHENGLONG METALLURGICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects that the existing laterite nickel ore has a large water content and is not easy to handle, the invention provides a pretreatment method for laterite nickel ore

Method used

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  • Method and system for pretreating lateritic nickel ore
  • Method and system for pretreating lateritic nickel ore
  • Method and system for pretreating lateritic nickel ore

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention relates to a method and system for pretreating lateritic nickel ore. The invention is implemented by baking, screening and crushing lateritic nickel ore with high water content. By using the technical scheme provided by the invention, water can be effectively removed from lateritic nickel ore with high water content and viscosity, and lump ore and fine ore are recycled respectively,thereby providing insurance for efficient utilization of lateritic nickel ore; and besides, the technological process and equipment are simple and accessible, so that the cheap lateritic nickel ore has large-scale industrial application prospects.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a method and a treatment system for reducing the water content of laterite nickel ore in the pretreatment stage before smelting. Background technique [0002] At present, my country's nickel sulfide ore is gradually decreasing, and the development value of laterite nickel ore has greatly increased. Although lateritic nickel ore treatment processes are mainly divided into hydrometallurgy and pyrometallurgy, pyrometallurgy is still the most mature process for smelting nickel-iron alloys using laterite nickel ore in the world. There are mainly blast furnace method, electric furnace method and so on to smelt ferronickel by fire method of laterite nickel ore. [0003] In China, it is more common to use pyrometallurgy laterite nickel ore to produce ferronickel in recent years. A large number of low-grade and ultra-low-grade laterite nickel ore are imported, and a large amount of low-grade or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/00C22B23/00
CPCY02P10/20
Inventor 柯雪利王长城陈苏
Owner GUANGXI SHENGLONG METALLURGICAL CO LTD
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