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Utilization method of magnesium condensation heat generated during pidgeon process magnesium smelting

A technology of magnesium smelting and water cooling, which is applied in the field of energy saving and consumption reduction in the metal magnesium smelting process, can solve the problems of affecting normal production and high energy consumption, and achieve the effects of dense crystallization, improved economic benefits, and reduced burning phenomena

Pending Publication Date: 2018-02-27
SHANXI HENGTIAN MAGNESIUM IND CO LTD
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Problems solved by technology

[0003] Aiming at the problems of large energy consumption and affecting normal production in the recycling process of condensation heat in the prior art, the present invention provides a method for utilizing magnesium condensation heat in the Pidgeon process of magnesium smelting

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  • Utilization method of magnesium condensation heat generated during pidgeon process magnesium smelting

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Embodiment Construction

[0017] A method for utilizing the heat of condensation of magnesium in the Pidgeon method for smelting magnesium, comprising the steps of:

[0018] In the first step, the water cooling in the Pidgeon process of magnesium smelting is changed to heat conduction oil cooling, and the circulating pump is used for pressurized transportation;

[0019] In the second step, the heat transfer oil is pressurized to 0.1-0.2MPa through the circulating delivery pump, and delivered to the inlet of the water jacket of the crystallizer;

[0020] In the third step, the heat conduction oil at the inlet of the water jacket of the reduction crystallizer enters the water jacket of the crystallizer under a pressure of 0.1-0.2 MPa. The heat conduction oil absorbs the condensation heat of the magnesium reduction process. The outlet of the water jacket of the crystallizer flows into the waste electronic circuit board deleading tin tank at the bottom of the crystallizer water jacket;

[0021] In the fou...

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Abstract

The invention discloses a utilization method of magnesium condensation heat generated during pidgeon process magnesium smelting, and belongs to the technical field of energy saving and consumption reducing in the metal magnesium smelting process. The problems that in the prior art, energy consumption in the condensation heat recycling process is large, and normal production is influenced can be solved. Water cooling during pidgeon process magnesium smelting is converted into heat conductive oil cooling, and heat conductive oil is subjected to pressurized conveying through a circulating delivery pump; the heat conductive oil is pressurized to 0.1-0.2MPa and delivered to an inlet of a crystallizer water jacket; the heat conductive oil enters the crystallizer water jacket at the pressure of 0.1-0.2MPa and absorbs condensation heat generated in the magnesium smelting process, and after the temperature is increased to 220-230 DEG C, the heat conductive oil flows into a waste electronic circuit board slicker solder removing tank from an outlet of the crystallizer water jacket; and after the waste electronic circuit board slicker solder removing tank is heated by the heat conductive oil,tin solder joints on a waste electronic circuit are melted and then flow into a casting mold at the bottom of the tank, and a finished cast tin solder product is formed. According to the utilization method, the problem that a magnesium crystallizer generates limescale is solved, and pollution of flue gas in the waste electronic circuit board slicker solder recycling process is reduced.

Description

technical field [0001] The invention belongs to the technical field of energy saving and consumption reduction in the metal magnesium smelting process, and in particular relates to a method for utilizing magnesium condensation heat in the Pidgeon process of magnesium smelting. Background technique [0002] The Pidgeon method magnesium smelting process is a silicon thermal reduction method for magnesium smelting. Silicon is used as a reducing agent. Under vacuum and heating conditions, silicon in ferrosilicon and magnesium oxide in calcined dolomite react to form silicon dioxide and reduce metal magnesium. , Magnesium is reduced to gaseous magnesium, and gaseous magnesium releases condensation heat under cooling and cooling conditions and becomes a solid to be collected. Usually, the condensation heat is taken away by water cooling. The cooling water absorbs the heat and then returns to the cooling system to recover the condensation heat after being cooled. This cycle first c...

Claims

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Application Information

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IPC IPC(8): C22B26/22C22B5/04
CPCC22B5/04C22B26/22
Inventor 朱广东刘彩荣
Owner SHANXI HENGTIAN MAGNESIUM IND CO LTD
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