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Magnesium reducing agent flux and preparation method thereof

A technology of reducing agent and flux, which is applied in the field of magnesium reducing agent flux and its preparation, can solve the problems of poor quality of magnesium reducing agent and the achievement of magnesium reducing agent, and achieve the effect of reducing impurity content, removing impurities and improving quality

Active Publication Date: 2018-08-21
PANGANG GROUP RESEARCH INSTITUTE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the existing magnesium reducing agent flux can only make the magnesium reducing agent produced by the electrolysis method reach the national standard (GB / T3499-2011) 90 standard, and it is difficult to make the magnesium reducing agent produced by the electrolysis method reach the national standard (GB / T3499-2011). The national standard (GB / T3499-2011) 95A standard, the problem that the quality of the magnesium reducing agent after treatment is still poor

Method used

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  • Magnesium reducing agent flux and preparation method thereof
  • Magnesium reducing agent flux and preparation method thereof
  • Magnesium reducing agent flux and preparation method thereof

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preparation example Construction

[0027] The present invention also provides a kind of preparation method of above-mentioned magnesium reducing agent flux, comprises the following steps:

[0028] a, KCl, NaCl and CaCl 2 After heating and melting at 750-800°C, add MgCl 2 , then add CaF 2 powder, stir and mix to obtain mixed molten salt, so that MgCl in mixed molten salt 2 15-20%, KCl 30-40%, NaCl 10-25%, CaCl 2 25-30%, CaF 2 3.5~4.5%, TiCl 2 and TiCl 3 The mixture of 1.5 ~ 2.5%;

[0029] b, adding sponge titanium and TiCl to the mixed molten salt obtained in step a 4 , reacted to TiCl 2 and TiCl 3 When the content of the mixture accounts for 1.5-2.5% of the total weight of the solution, the magnesium reducing agent flux is obtained.

[0030] Magnesium reducing agent flux of the present invention adopts MgCl 2 As raw material, by adding CaCl 2 , MgCl 2and CaF 2 , and limit the impurity content of each raw material, so that the mixed molten salt composition is MgCl 2 15-20%, KCl 30-40%, NaCl 10-...

Embodiment 1

[0033] Embodiment 1 and Example 2 are the effects of refining with the magnesium reducing agent and flux of the present invention, and Comparative Example 1 is the effect of refining with the existing magnesium reducing agent and flux. In order to select a suitable concentration range of magnesium chloride, Comparative Example 2 and Comparative Example 3 were carried out. In order to select a suitable concentration range of calcium chloride, Comparative Example 4 and Comparative Example 5 were carried out. In order to select a suitable concentration range of low-valent titanium, Comparative Example 6 was carried out.

[0034] Embodiment 1 adopts flux of the present invention to refine magnesium reducing agent

[0035] Prepare magnesium reducing agent flux, concrete steps are as follows:

[0036] a, KCl, NaCl and CaCl 2 After heating and melting at 750-800°C, add MgCl 2 , then add CaF 2 Powder, stir and mix to mix the molten salt, to ensure the MgCl in the molten salt 2 1...

Embodiment 2

[0042] Embodiment 2 adopts flux of the present invention to refine magnesium reducing agent

[0043] Prepare magnesium reducing agent flux, concrete steps are as follows:

[0044] a, KCl, NaCl and CaCl 2 After heating and melting at 750-800°C, add MgCl 2 , then add CaF 2 Powder, stir and mix to mix the molten salt, to ensure the MgCl in the molten salt 2 18%, KCl 33%, NaCl 17%, CaCl 2 28%, CaF 2 4%;

[0045] b, adding sponge titanium and TiCl to the mixed molten salt obtained in step a 4 , reacted to TiCl 2 and TiCl 3 The content of the mixture accounts for 2% of the total flux, and the magnesium reducing agent flux is prepared.

[0046] The magnesium reducing agent flux composition prepared in Example 2 is: MgCl 2 17.5%, KCl 32.2%, NaCl 16.6%, CaCl 2 27.4%, CaF 2 3.8%, TiCl 2 and TiCl 3 The mixture is 2.2%, and the balance is impurities.

[0047] The above-mentioned magnesium reducing agent flux is used to refine the crude magnesium produced by the electrolys...

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Abstract

The invention belongs to the field of non-ferrous metal metallurgy, in particular relates to a magnesium reducing agent flux and a preparation method thereof and aims at solving the problems that the impurity removing effect of a flux used by an existing magnesium reducing agent is poor and the quality of a refined magnesium reducing agent is still poor. The magnesium reducing agent flux provided by the invention comprises the following chemical ingredients: 15-20% of MgCl2, 30-40% of KCl, 10-25% of NaCl, 25-30% of CaCl2, 3.5-4.5% of CaF2, 1.5-2.5% of mixture of TiCl2 and TiCl3 and the balance of inevitable impurities. When the flux provided by the invention is adopted for treating a magnesium reducing agent obtained by a magnesium electrolysis technology, the quality of the magnesium reducing agent can be greatly improved, and a powerful support is provided for improvement of quality of subsequently produced sponge titanium. The flux provided by the invention has the advantages that raw materials are simple and easy to get, high design investment is not needed, and the feasibility is strong, so that the flux provided by the invention has stronger application and popularization prospects.

Description

technical field [0001] The invention belongs to the field of nonferrous metal smelting, and in particular relates to a magnesium reducing agent flux and a preparation method thereof. Background technique [0002] In the process of producing sponge titanium by the Krall method, magnesium electrolysis is the core process of establishing the magnesium chloride cycle in the production process of sponge titanium. The process is to generate liquid magnesium and chlorine by electrolysis of magnesium chloride from the reduction-distillation process, and the liquid magnesium is directly used as reduction The agent is used in the reduction-distillation process to prepare titanium sponge, and its quality directly affects the quality of titanium sponge. Therefore, improving the quality of the magnesium reducing agent used in the production process of sponge titanium has become an important prerequisite for the production of high-quality sponge titanium. [0003] The magnesium produced ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B9/10C22B34/12
CPCC22B9/10C22B34/1272
Inventor 马尚润朱福兴穆天柱李开华
Owner PANGANG GROUP RESEARCH INSTITUTE CO LTD
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