Molten slag drainage device for slag wool and use method thereof

A slag wool and slag technology, applied in the field of metallurgical slag, can solve the problems such as inability to realize on-line heating and long-distance transportation of slag, adverse effects of the overall process layout, reducing the utilization ratio of sensible heat of slag, etc. Benefit and promotion value, obvious economic and environmental benefits, long service life effect

Active Publication Date: 2017-01-04
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This utility model supplements heat and eliminates hanging slag by means of flame combustion at the slag inlet end, but cannot realize online heating and long-distance transportation of slag, which significantly reduces the sensible heat utilization ratio of slag, and affects the overall process of subsequent products. Adverse effects of the layout plan
[0005] In short, there are few technologies related to online slag drainage devices in the prior art, and in the actual production of slag wool, the prior art often transfers the slag through the tundish and then heats the slag through the electric furnace and the cupola. Complexity, large investment, low operating rate, high cost of use, etc.

Method used

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  • Molten slag drainage device for slag wool and use method thereof
  • Molten slag drainage device for slag wool and use method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A slag drainage device for slag cotton and its use method, such as figure 1 , figure 2 As shown, the heater 3 (stainless steel rod with a diameter of 10mm) is connected to the power controller 4 through the stainless steel support rod 10 and the heating wire 6, and the insulating gasket 9 can ensure that the support rod 10 and the support plate 11 are kept insulated, ensuring Overall device safety.

[0036] The installed heater 3 has the same length as the slag discharge tank 7. After inspection, there is no leakage between the slag discharge tank 7, the heater 3 and the support plate 11.

[0037] When the slag flows from the slag discharge container 1 through the slag discharge guide groove 2 into the slag discharge tank 7, the temperature is about 1550°C, the slag is completely submerged in the heater 3, and the height of the center of the heater 3 is 1 / of the height of the slag liquid level 2. When 220V AC is connected, the heat generated by the heater 3 keeps t...

Embodiment 2

[0039] A slag drainage device for slag cotton and its use method, such as figure 1 , figure 2 As shown, the heater 3 (the side length is 8 mm Q235 square steel) is connected to the power controller 4 through the support rod 10 made of stainless steel and the heating wire 6, and the insulating gasket 9 can ensure that the support rod 10 and the support plate 11 are kept insulated. Ensure the safety of the overall device.

[0040] The installed heater 3 is slightly shorter than the length of the slag outlet chute 7. After inspection, there is no leakage between the slag outlet chute 7, the heater 3, and the support plate 11.

[0041] When the slag flows from the slag discharge container 1 through the slag discharge guide groove 2 into the slag discharge tank 7, the temperature is about 1530°C, the slag is completely submerged in the heater 3, and the center height of the heater 3 is 1 / of the height of the slag liquid level 3. After the 220V direct current is connected, the ...

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PUM

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Abstract

The invention relates to a molten slag drainage device for slag wool and a use method thereof. The device comprises a slag discharge container, a slag discharge spout, a slag receiving container; the slag discharge container is connected at an inlet end of the slag discharge spout through a slag discharge guide slot; an outlet end of the slag discharge spout is connected with the slag receiving container through a slag receiving guide slot; the slag discharge spout is internally provided with a heater, and the heater is parallel to the flowing direction of molten slag in the slag discharge spout; the lower ends of supporting rods at both ends of the heater are connected with a power controller by heating wires, and the power controller is connected with a power supply; the molten slag enters the slag discharge container through a blast furnace slagging port, enters the slag discharge spout through the slag discharge guide slot, is heated in the slag discharge spout, keeps good liquidity, and is directly used for slag wool production through the slag receiving guide slot and the slag receiving container. The molten slag can flow in relatively long distance without solidification, long-distance transport of the molten slag is achieved, and the process cost for directly producing products from the molten slag is decreased significantly.

Description

technical field [0001] The invention relates to the technical field of metallurgical slag, in particular to a slag drainage device for slag wool and a use method thereof. Background technique [0002] Molten blast furnace slag is one of the main by-products of blast furnaces and a major component of steel mill waste. Usually, each ton of molten blast furnace slag contains (126~188)×10 4 The sensible heat of kJ is equivalent to the energy of 30-40kg heavy oil, and it has a relatively high temperature, about 1450-1600°C, which is a high-quality waste heat resource and has a high recycling value. Recovery of this part of sensible heat will reduce production costs for enterprises and create economic benefits. [0003] At present, most blast furnace slags at home and abroad are mainly water-quenched. Although a small amount of heat can be recovered in the form of waste water, most of the energy cannot be recovered, resulting in huge energy waste. The direct production of molte...

Claims

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Application Information

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IPC IPC(8): C03B37/00
Inventor 王向锋马光宇徐鹏飞刘常鹏李卫东张天赋于淑娟张大奎侯洪宇耿继双钱峰
Owner ANGANG STEEL CO LTD
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