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Slagging equipment after slagging and smelting and its use method

An equipment and slag-making technology, which are applied in the field of slag-removing equipment after slag-making and smelting, can solve the problems of difficult separation, polysilicon mixed with slag agents, etc., and achieve the effects of effective slag removal and dumping, reducing energy consumption, and reducing the danger of workers' operation.

Inactive Publication Date: 2016-04-13
QINGDAO NEW ENERGY SOLUTIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the mixing between the two liquid states, the finally poured polysilicon is often mixed with slag agent, which is not easy to separate

Method used

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  • Slagging equipment after slagging and smelting and its use method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 The shown slag extraction equipment after slagging and smelting includes a cantilever crane 1, a cantilever 2 is fixedly installed on the cantilever crane 1, a wire winding machine 3 is fixedly installed on the cantilever 2, and the wire winding machine 3 is suspended and connected with a slag storage device 5, wherein a closed cavity is formed between the inner wall and the outer wall of the slag storage device 5, and the water inlet pipe 12 and the water outlet pipe 11 are connected to the closed cavity, and the slag storage device 5 communicates with the vacuum tank 17 through a vacuum bellows 16, Also communicate with gas cylinder 21 by blowing pipe 19, wherein vacuum tank 17 is connected with vacuum pump 13 by connecting pipe 14, and the bottom of slag depositor 5 is communicated with graphite tube 6, and the outlet end bottom of graphite tube 6 is placed with graphite crucible 7, graphite The outer wall of the crucible 7 is wound with an induction...

Embodiment 2

[0029] Use the equipment described in embodiment 1 to get slag:

[0030] The first step of pretreatment: Put the silicon material and slag material into the graphite crucible 7, start the power supply of the induction coil 8, and heat the silicon material and slag material in the graphite crucible 7 to 1500°C until they are completely melted into a molten state to form silicon liquid 10 and slag agent 9, and keep warm at this temperature for 30 minutes;

[0031] The second step is to inflate: control the winding machine 3 to lower the slag storage device 5 until the bottom of the graphite tube 6 drops to the bottom of the silicon liquid 10, then open the gas valve 18 to pass the gas 20 into the molten silicon liquid 10, Make the gas 20 fully react with the molten silicon liquid 10;

[0032] The third step of slag removal treatment: after the inflation process is completed, close the gas valve 18, control the winding machine 3 to make the slag depositor 5 drive the graphite tu...

Embodiment 3

[0038] Use the equipment described in embodiment 1 to get slag:

[0039] The first step of pretreatment: Put the silicon material and slag material into the graphite crucible 7, start the power supply of the induction coil 8, and heat the silicon material and slag material in the graphite crucible 7 to 1500°C until they are completely melted into a molten state to form silicon liquid 10 and slag agent 9, and kept at this temperature for 50 minutes;

[0040] The second step is to inflate: control the winding machine 3 to lower the slag storage device 5 until the bottom of the graphite tube 6 drops to the bottom of the silicon liquid 10, then open the gas valve 18 to pass the gas 20 into the molten silicon liquid 10, Make the gas 20 fully react with the molten silicon liquid 10;

[0041] The third step of slag removal treatment: after the inflation process is completed, close the gas valve 18, control the winding machine 3 to make the slag depositor 5 drive the graphite tube 6 ...

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Abstract

Belonging to the technical field of metallurgical slagging, the invention in particular relates to a slag fetching device used after slagging smelting and a use method thereof. On the basis of original slagging equipment, a slag storer, a graphite pipe and a vacuum instrument are added. The use method includes: firstly heating a silicon material and slag to a molten state to form a silicon liquid and a slag agent, stopping heating, extending the graphite pipe into the bottom of the silicon liquid, and then filling the silicon liquid with gas; at the end of gas filling, moving the graphite pipe to the surface layer of the slag agent, then performing vacuum pumping to the other end of the graphite pipe by a vacuum tank, letting the slag agent of the upper layer enter the slag storer under the action of pressure difference, simultaneously extending the graphite pipe downward, ensuring the bottom end of the graphite pipe to dip into the slag agent till all the slag agent enters the slag storer, then opening the slag storer and taking the slag agent out. The device provided by the invention has the advantages of convenient reconstruction and installation, and simple operation. The graphite pipe can extract the slag agent cleanly and dump the slag agent, so that the finally purified polysilicon has improved quality and high yield of primary product, and no dust or other garbage can be generated during production. Thus, the device is applicable to industrial mass production.

Description

technical field [0001] The invention belongs to the technical field of metallurgical slagging, and in particular relates to a slag-taking device after slagging and smelting and a use method thereof. Background technique [0002] With the development of the world economy and the advancement of industrialization, human demand for energy is increasing day by day. While satisfying its own rapid development, human beings are also facing the crisis of gradually depleting fossil energy sources such as coal, oil, and natural gas, and cannot avoid the problem of serious environmental pollution. Compared with traditional energy sources, solar power generation has the advantages of cleanness, environmental protection, safety and convenience, and sufficient resources. It is a renewable green energy that can effectively alleviate the problems of energy shortage and environmental pollution. Therefore, photovoltaic energy is considered to be the most important new energy in the 21st centu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/037
Inventor 顾正张磊
Owner QINGDAO NEW ENERGY SOLUTIONS