A coal powder-injected mineral roasting device and process

A roasting process and mineral technology, which is applied in the field of pulverized coal injection mineral roasting devices, achieves the effects of reducing costs, eliminating blind spots, and having good air permeability.

Active Publication Date: 2017-11-24
QINGDAO ZHIBANG FURNACE DESIGN RES
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Problems solved by technology

[0003] Based on the above technical problems, the present invention provides a coal powder-injected mineral roasting device and process, which uses coal powder to burn and heat minerals, effectively reducing the cost of mineral roasting processing, and at the same time, the flue gas produced by coal powder combustion is recycled. , effectively solve the problem of pollutant discharge, energy saving and environmental protection

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  • A coal powder-injected mineral roasting device and process

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Embodiment Construction

[0027] Referring to the accompanying drawings, a coal powder-injected mineral roasting device includes a furnace body 1, which is divided into a preheating section 101, a roasting section 102, and an air-cooling section 103 from top to bottom. A combustion chamber 2 is provided in the roasting section 102 , and the combustion chamber 2 is connected with a coal injection device 3 . The preheating section 101 is provided with a flue gas outlet 4 , and the air cooling section 103 is provided with a circulating flue gas inlet 5 and a material outlet 6 . A circulating air duct 7 is arranged between the flue gas outlet 4 and the circulating flue gas inlet 5 , and a directional pressurizing device 8 is arranged on the circulating air duct 7 . A feeding section 9 is arranged on the top of the furnace body 1, and the feeding section 9 is provided with an automatic sealing device, and the automatic sealing device includes a first automatic sealing device 901 and a second automatic seali...

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Abstract

The invention discloses a coal powder-injected mineral roasting device, which comprises a furnace body. The furnace body is sequentially divided into a preheating section, a roasting section and an air-cooling section from top to bottom. A combustion chamber is arranged in the roasting section. The chamber is connected to the coal injection device, the preheating section is provided with a flue gas outlet, the air cooling section is provided with a circulating flue gas inlet and a material outlet, and a circulating air duct is arranged between the flue gas outlet and the circulating flue gas inlet. A directional pressurization device is installed on the circulating air duct, a feeding section is installed on the top of the furnace body, an automatic sealing device is installed on the feeding section, and a finished mineral collection section is installed at the bottom of the furnace body. The invention adopts the mode of burning and heating minerals by spraying coal powder, which effectively reduces the cost of mineral roasting and processing, and at the same time, the flue gas generated by coal powder combustion is recycled, which effectively solves the problem of pollutant discharge, and is energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to a coal powder-injected mineral roasting device and a process, belonging to the field of mineral processing. Background technique [0002] Roasting refers to the reaction process of solid materials under the condition of high temperature without melting, which can include oxidation, pyrolysis, reduction, halogenation, etc., and is usually used in inorganic chemical and metallurgical industries. At present, in the process of mineral roasting, the method of burning and roasting minerals with gaseous fuels is mostly used. Since gaseous fuels need to be made from solid fuels such as coal through dry distillation or gasification steps, the cost of this mineral roasting method is relatively high. Contents of the invention [0003] Based on the above technical problems, the present invention provides a coal powder-injected mineral roasting device and process, which uses coal powder to burn and heat minerals, which effectively reduces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/02
Inventor 杨光杨德金杨明昊王若旭王景恩杨爽傅彦伯
Owner QINGDAO ZHIBANG FURNACE DESIGN RES
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