Rotary kiln applied to ferronickel reduction production technology and construction method thereof

A production process and technology of rotary kiln, applied in the field of direct reduction of ferronickel smelting rotary kiln, can solve the problems of lack of market competitiveness, high production cost, low production efficiency of ferronickel process, etc., to improve market competitiveness, The effect of reducing production costs and improving production efficiency

Inactive Publication Date: 2014-01-15
王景军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the constraints of the above two technical links, the existing rotary kiln direct reduction process to produce ferronickel has low production efficiency, high production cost, and no market competitiveness.

Method used

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  • Rotary kiln applied to ferronickel reduction production technology and construction method thereof
  • Rotary kiln applied to ferronickel reduction production technology and construction method thereof
  • Rotary kiln applied to ferronickel reduction production technology and construction method thereof

Examples

Experimental program
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Embodiment Construction

[0032] Such as figure 2 , 3 As shown, the rotary kiln includes a rotary kiln shell 1 and a refractory material 2 built in the rotary kiln shell 1, and a heat-resistant alloy steel cylinder coaxial with the rotary kiln shell 1 is fixed on the surface of the refractory material 2 4. The refractory material 2 is a refractory castable 3 . The heat-resistant alloy steel cylinder 4 starts at the reflow section of raw materials in the kiln in the length direction, that is, the ring-forming area, and ends at the discharge end 9 of the rotary kiln, in the shell of the rotary kiln before the ring-forming area. Only the refractory material 2 is built, and the refractory material 2 here is refractory brick or refractory castable, and refractory brick is used in this embodiment.

[0033] The material of the heat-resistant alloy steel cylinder 4 is a heat-resistant alloy with a heat-resistant temperature above 500° C., such as heat-resistant alloy 310s or ZG40Cr25Ni20 or ZG35Cr28Ni16 or ...

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PUM

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Abstract

The invention discloses a rotary kiln applied to ferronickel reduction production technology and a construction method thereof. The rotary kiln comprises a rotary kiln casing and fire-proof materials bricked in the rotary kiln casing. The rotary kiln is characterized in that a heat-resistant alloy steel cylinder with the same coaxiality as the rotary kiln casing is fixed on the surface of the fire-proof materials. According to the invention, the production efficiency for directly reducing and smelting ferronickel by the rotary kiln is improved, the production cost is reduced, formed rings in the rotary kiln can be processed effectively and timely under the condition that operation of the rotary kiln is not stopped, and the service life of the fire-proof materials used in the reduction concentration phase is prolonged.

Description

technical field [0001] The invention belongs to the field of direct reduction of a rotary kiln for ferronickel smelting, in particular to a rotary kiln used in a production process of ferronickel reduction and a construction method thereof. technical background [0002] At present, domestic ferronickel production has gone through nearly eight years of hard work, including smelting ferronickel in blast furnaces and blast furnaces, transforming silicon-manganese electric furnaces, calcium carbide furnaces and other electric furnaces to explore the production of ferronickel, optimizing parameters, and launching new electric furnaces to produce ferronickel. The efforts of technicians to explore and continuously optimize parameters have resulted in the coexistence of blast furnace and electric furnace for ferronickel smelting, that is, blast furnaces use high-iron and low-nickel laterite ore to produce low-nickel-iron, and electric furnaces use high-nickel and low-iron laterite or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B7/02F27B7/16F27B7/22F27B7/28
Inventor 王景军
Owner 王景军
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