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KR screw mixer

A stirrer and spiral technology, which is applied in the field of desulfurization devices in the metallurgical casting industry, can solve the problems such as the unsatisfactory desulfurization stirring effect of the stirring head, achieve ideal desulfurization stirring effects, reduce manufacturing costs, and improve desulfurization efficiency.

Inactive Publication Date: 2020-05-22
营口东邦环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is a mechanical stirring device, the stirring head is made of refractory material, and there are stirring blades around the stirring head, which can stir the iron (steel) water through rotation, but the desulfurization stirring effect of the above stirring head is not very ideal.

Method used

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  • KR screw mixer
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Effect test

Embodiment 1

[0022] The refractory protective layer of the present invention includes fused mullite, andalusite, white corundum, α-Al 2 o 3 Micropowder, 95# flake graphite, binder, steel fiber, kyanite, spinel fine powder and burnt gem; the mass ratio of the above raw materials is: 35:30:9:3:2:1:1:1 :1:1.

Embodiment 2

[0024] The refractory protective layer of the present invention includes fused mullite, andalusite, white corundum, α-Al 2 o 3 Micropowder, 95# flake graphite, binder, steel fiber, kyanite, spinel fine powder and burnt gem; the mass ratio of the above raw materials is: 41:40:12:6:3:5:3:2 :2:2.

Embodiment 3

[0026] The refractory protective layer of the present invention includes fused mullite, andalusite, white corundum, α-Al 2 o 3 Micropowder, 95# flake graphite, binder, steel fiber, kyanite, spinel fine powder and burnt gem; the mass ratio of the above raw materials is: 37:36:10:5:2.5:3:2:1.5 :1.5:1.5.

[0027] Physical and chemical performance data of the device of the present invention

[0028]

[0029] The cooling medium gas of the present invention enters the cooling chamber 901 in the blowing mechanism 9 through the cooling medium channel 8 , and returns through the cooling medium channel 8 after completing heat exchange with the special-shaped horn blowing port 902 and taking away part of the heat. Through the above-mentioned structural design, the present invention can ensure that the nozzle of the desulfurization agent (passivation granular magnesium can be used) is blocked during the use of the device.

[0030] In the present invention, by adjusting the outlet st...

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Abstract

The invention belongs to the field of desulfurization devices in the metallurgy and casting industry, in particular to a KR screw mixer. A screw blade (4) is fixedly arranged on a mixer shaft (1). A core tube (5) is longitudinally arranged in the middle portion of the mixer shaft (1). A cooling sleeve (7) is fixedly arranged outside the core tube (5). A cooling medium channel (8) is formed betweenthe inner wall of the cooling sleeve (7) and the outer wall of the core tube (5). A spraying and blowing mechanism (9) is arranged at the bottom of the mixer shaft (1). The spraying and blowing mechanism (9) comprises a cooling chamber (901), a special-shaped horn-shaped spraying and blowing mouth (902) and a turbine blade (903). The special-shaped horn-shaped spraying and blowing mouth (902) isarranged in the cooling chamber (901). The bottom of the core tube (5) communicates with the special-shaped horn-shaped spraying and blowing mouth (902). The cooling medium channel (8) communicates with the cooling chamber (901). The KR screw mixer has the characteristics of being simple in structure, long in service life, low in cost, ideal in desulfurizing and mixing effect and the like.

Description

technical field [0001] The invention belongs to the field of desulfurization devices in the metallurgical casting industry, and in particular relates to a KR spiral agitator. Background technique [0002] KR (Kambara Reactor) desulfurization method is a method of desulfurization of molten iron using mechanical stirring. When the iron (steel) water is desulfurized in the ladle, a certain amount of desulfurizer is added, and it is required to fully mix and react with the iron (steel) water. This requires mechanical stirring of the iron (steel) water. Due to the excellent desulfurization kinetic characteristics of KR (Kambara Reactor) stirring desulfurization, it has attracted extensive attention from domestic and foreign iron and steel enterprises. [0003] At present, there is a mechanical stirring device, the stirring head is made of refractory material, and stirring blades are arranged around the stirring head to stir the iron (steel) water through rotation, but the desul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C1/02C21C7/064C04B35/66
CPCC04B35/66C04B2235/3217C04B2235/3222C04B2235/3463C04B2235/349C04B2235/425C04B2235/5216C21C1/02C21C7/064
Inventor 陈学冬于林辉陈树村
Owner 营口东邦环保科技股份有限公司
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