Gas-based reduced iron shaft furnace

A technology for reducing iron and shaft furnaces, which is applied in shaft furnaces, furnaces, furnace types, etc., can solve the problems of a large number of supporting steel structure materials, materials and the friction of the inner wall of the furnace, high manufacturing and operating costs, and achieve production and operation. Ease of control, steel savings, low manufacturing and operating costs

Pending Publication Date: 2022-04-19
太原理工大成工程有限公司 +1
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Problems solved by technology

[0005] In order to solve the technical defects in the structure design of the gas-based shaft furnace in the prior art, the height of the feeding device and the height of the reduction section of the shaft furnace are longer, and the oxidized pellet material in the shaft furnace is heated and expanded, which increases the friction between the ma

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  • Gas-based reduced iron shaft furnace

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Example Embodiment

[0021] The present invention is aimed at the technical defects in the existing vertical furnace structure design, from the receiving mode, the vertical furnace body, the furnace body temperature measurement mode, the cloth mode and the discharge mode and other aspects of a new design, providing a new type of gas-based reduced iron vertical furnace.

[0022] The following by specific embodiments, further illustrate specific embodiments of the present invention.

[0023] as Figure 1 As shown, the present invention provides a new type of gas-based reducing iron vertical furnace, from top to bottom for the receiving device, the vertical furnace body and the discharge device, the receiving device is composed of a receiving silo 1, the upper sealing silo 2 and the feeding pipe 4, the upper sealing bin 2 is provided at the outlet of the upper insertion plate valve 3; the discharge device is composed of a discharge pipe 14, the lower sealing bin 16 and a spiral feeder 18, the lower seali...

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Abstract

The invention relates to a gas-based reduced iron shaft furnace which sequentially comprises a receiving device, a shaft furnace body and a discharging device from top to bottom. A main reaction area of the shaft furnace body is of a circular truncated cone structure, a thermal reduction gas inlet is located in the lower section of the reaction area, two sets of temperature measuring devices are arranged at different heights of the reaction area of the shaft furnace body, the other set of temperature measuring devices are arranged above the thermal reduction gas inlet, and a material receiving bell is arranged on the inner side of the top of the shaft furnace body. The top of the shaft furnace body is provided with an ascending pipe for recycling furnace top circulating gas, and a lower cooling area of the shaft furnace body is provided with a discharging and guiding device. The shaft furnace is simple in structure and small in size, production of the shaft furnace is easier to control, and the overall shaft furnace equipment manufacturing and operating cost is low.

Description

technical field [0001] The invention belongs to the technical field of metallurgical equipment, and in particular relates to a novel gas-based reduced iron shaft furnace. Background technique [0002] At present, gas-based shaft furnace direct reduced iron technology (sponge iron or DRI) has been maturely applied abroad as the main non-blast furnace ironmaking technology. It is an important production technology for improving the structure of iron and steel products, improving the quality of iron and steel products, and realizing clean smelting. It is also an important production technology for the sustainable development of the iron and steel industry, energy saving and emission reduction, and environmentally friendly development mainstream direction. [0003] my country is a big steel producer. In 2019, my country's crude steel output reached 996 million tons, accounting for about 53% of the global total. However, my country's steelmaking process is basically based on th...

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Application Information

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IPC IPC(8): C21B13/02
CPCC21B13/02C21B13/0073Y02P10/143
Inventor 薛钟安尉明梁言石玉良杨力张永发周晋华
Owner 太原理工大成工程有限公司
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