Full-metal structure reduction rapid-loading metallurgy device

Abstract

The invention discloses a full-metal structure reduction rapid-loading metallurgy device. The device comprises a reduction rotary kiln, wherein the reduction rotary kiln comprises a front kiln body and a rear kiln body which are in butt joint; a front end feeding opening of the front kiln body and a material bin are connected through a spiral conveyor, the front end feeding opening of the front kiln body is further in communication with a first cloth bag dust remover through a dust suction pipe, a rear end discharging opening of the rear kiln body is in communication with a rotary type coolingkiln through a discharging pipe, and the rotary type cooling kiln is connected to a bin pump finished product recoverer through a spiral elevator; and a hot air inlet of the front kiln body and a hotair inlet of the rear kiln body in the same sides are connected in parallel on a hot air pipe of a natural gas combustion furnace, a flue gas outlet pipe at the top of the front kiln body and a fluegas outlet pipe at the rear kiln body are connected in parallel on a waste heat boiler, the waste heat boiler is connected to a coal economizer, and the coal economizer is connected to a second clothbag dust remover through a centrifugal fan. The device has the advantages of being wide in raw material adaptability, high in reaction efficiency, high in material purity, energy-saving and environment-friendly, adjustable in reaction atmosphere, and controllable in reaction time.

Description

technical field [0001] The invention relates to mining smelting equipment, in particular to an all-metal structure reduction quick-installation metallurgical equipment. Background technique [0002] At present, the commonly used reduction equipment in the metallurgical industry includes rotary kiln, rotary hearth furnace, shaft furnace and tunnel kiln. [0003] The rotary kiln is mainly divided into internal heat type and external heat type. The external heat type rotary kiln is directly reduced by coal-based combustion, which has a large production capacity, but the reduction atmosphere is uncontrollable, the reduction atmosphere is poor, the reduction rate is low, and it is difficult to meet environmental protection standards; the internal heat type Compared with the external heating type, the rotary kiln has a better reducing atmosphere and a higher reduction rate, but the mechanical seal of the system equipment is difficult to control, the kiln body is easily deformed by...

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Problems solved by technology

[0003] The rotary kiln is mainly divided into internal heat type and external heat type. The external heat type rotary kiln is directly reduced by coal-based combustion, which has a large production capacity, but the reduction atmosphere is uncontrollable, the reduction atmosphere is poor, the reduction rate is low, and it is difficult to meet environmental protection standards; the internal heat type Compared with the external heating type, the rotary kiln has a better reducing atmosphere and a higher reduction rate, but the mechanical seal of the system equipment is difficult to control, the kiln body is easily deformed by the temperature during the production process, and the reaction materials are easy to corrode, the service life is short, and the energy consumption too high

[0004] The rotary hearth furnace is characterized by low reduction rate, high technical difficulty in operation, large investment, high maintenance and production costs, small production capacity, and difficulty in large-scale production

[0005] The tunnel kiln is divided into two types: tank-equipped and tank-free. The tunnel kiln with tank is mainly used for the production of grinding metallurgy. The reduction rate is high, but it is difficult to produce on a large scale. Large; the tankless tunnel kiln mainly produces gravel iron and reduced iron, which requires large investment, but small production capacity, poor adaptability of raw materials, difficulty in large-scale production, and low utilization rate of heat energy

[0006] The shaft furnace uses gas-based direct reduction, which has a large production capacity, but has a huge investment, cannot produce powder, is easily limited by raw materials, and has low heat energy utilization rate and slow reduction speed. serial production

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