A microwave low-temperature smelting device for laterite nickel ore

Abstract

The invention discloses a laterite-nickel ore microwave low-temperature smelting device which comprises a continuous high-temperature tunnel kiln (1) and a microwave source and control part (2) erected on both sides of the continuous high-temperature tunnel kiln (1), wherein the continuous high-temperature tunnel kiln (1) comprises a preheating section (1-1), a microwave heating cavity (1-2), an energy feed wave guide set (1-3) and a microwave energy feed port (1-4) which are connected with the microwave heating cavity (1-2), and a microwave leakage suppression device (3) installed at the tail end of the microwave heating cavity (1-2); the microwave source and control part (2) comprises a microwave output cabinet and a power supply control cabinet; and the periphery of the microwave heating cavity (1-2) is provided with a water cooler and an air cooler. The laterite-nickel ore microwave low-temperature smelting device disclosed by the invention has the advantages of reasonable structural design, high microwave heating efficiency, high utilization ratio of microwave energy, high recovery rate of nickel iron and wide application range, and can implement continuous low-cost energy-saving nickel iron smelting production.

Description

technical field [0001] The invention relates to a laterite nickel ore smelting application device, in particular to a laterite nickel ore microwave low-temperature smelting device. Background technique [0002] With the enthusiasm for investment in laterite nickel ore in my country, the high-quality laterite nickel ore resources in China have been significantly reduced at present, and the price of laterite nickel ore with a nickel content of less than 2% is cheap, but the cost of smelting by traditional techniques is relatively high. How to make it more effective? The development of low-grade lateritic nickel ore has become a real problem. Laterite nickel ore belongs to oxide sand, and the domestic use mainly comes from Indonesia and the Philippines. It is the main raw material for smelting nickel pig iron and is used as raw material for the production of stainless steel. High-grade nickel-iron ore resources are monopolized by Japanese companies, and my country can only impo...

AI Technical Summary

Problems solved by technology

[0005] 1. There is no cooling device outside the microwave cavity, which causes the ambient temperature of the working site to be too high, which is not conducive to normal work

[0006] 2. The use of thermal insulation materials exceeds its normal use temperature, which changes the properties of its own materials, becomes microwave-absorbing materials, and begins to absorb microwave energy, causing the thermal insulation material itself to heat up rapidly, exceeding its critical use temperature, making it damaged and unusable. And reduce the efficiency of microwave use

[0007] 3. The use efficiency of microwave energy is not high, the target temperature cannot be reached, and the efficiency of material heating is not high

Images