CN111118327A - K3Mg2Cl7Preparation method of (1) - Google Patents

Abstract

The invention discloses a K₃Mg₂Cl₇The method for preparing (1), the method comprising the steps of: adding aluminum into an induction furnace, heating to 1100 ℃, and melting the aluminum to obtain an aluminum melt, wherein the induction furnace casts and forges materials by quartz; adding preparation K into the induction furnace according to a preset proportion₃Mg₂Cl₇The raw material is obtained by taking the aluminum melt as a heat source, keeping the temperature at 700-800 ℃, and stirring to obtain K₃Mg₂Cl₇Wherein the preparation K₃Mg₂Cl₇The raw materials comprise KCl and MgCl₂The KCl and MgCl₂Is 3: 2. Compared with the prior art, the invention avoids the need of preparing K₃Mg₂Cl₇The pollution of iron, nickel and chromium in the process is avoided, and the K is further improved₃Mg₂Cl₇The purity of (2).

Description

K3Mg2Cl7Preparation method of (1)

Technical Field

The invention relates to the technical field of smelting of aluminum alloy sections, in particular to a K₃Mg₂Cl₇The preparation method of (1).

Background

As an important non-ferrous metal material, the aluminum alloy is widely applied to the fields of aviation, aerospace, automobiles, mechanical manufacturing, ships, chemical industry and the like. Aiming at aluminum alloy casting, the casting is generally required not to have the defects of shrinkage cavity, air holes, slag inclusion and the like so as to ensure the mechanical property, the corrosion resistance and the like of the casting. The most common method is to add a refining agent in the aluminum alloy melting process to remove Na, Li and Al generated in the aluminum alloy melt₂O₃And other oxides or related adsorbates, thereby improving the quality of the aluminum alloy casting.

Currently, in the preparation of aluminum alloy refining agents (e.g., K)₃Mg₂Cl₇) In the process, raw materials for preparing the aluminum alloy refining agent are usually directly added into a stainless steel pot or an iron pot for fusion synthesis, and the main components of the iron pot and the stainless steel pot are Fe, Ni and Cr, so that the aluminum alloy refining agent is polluted by Fe, Ni and Cr in the process of preparing the aluminum alloy refining agent, and the quality of an aluminum alloy casting is directly influenced by the pollution to the production of the refining agent.

Disclosure of Invention

The invention mainly aims to provide K₃Mg₂Cl₇In order to avoid the need to carry out the preparation of K₃Mg₂Cl₇The process is polluted by iron, nickel and chromium, thereby improving K₃Mg₂Cl₇The purity of (2).

In order to achieve the above purpose, the invention provides a K₃Mg₂Cl₇The method for preparing (1), the method comprising the steps of:

adding aluminum into an induction furnace, heating to 1100 ℃, and melting the aluminum to obtain an aluminum melt, wherein the induction furnace casts and forges materials by quartz;

adding preparation K into the induction furnace according to a preset proportion₃Mg₂Cl₇The raw material is obtained by taking the aluminum melt as a heat source, keeping the temperature at 700-800 ℃, and stirring to obtain K₃Mg₂Cl₇Wherein the preparation K₃Mg₂Cl₇The raw materials comprise KCl and MgCl₂The KCl and MgCl₂Is 3: 2.

The further technical scheme is that the frequency of the electric induction furnace is 50-150 HZ.

The further technical scheme of the invention is that K is added into the induction furnace according to a preset proportion₃Mg₂Cl₇The raw material is obtained by taking the aluminum melt as a heat source, keeping the temperature at 700-800 ℃, and stirring to obtain K₃Mg₂Cl₇Comprises the following steps:

adding K into the induction furnace according to a preset proportion₃Mg₂Cl₇The raw material is prepared by taking the aluminum melt as a heat source, keeping the temperature at 700-800 ℃, stirring for 30 minutes by using a graphite stirrer at the stirring speed of 10-20 r/min, and preserving the heat for 20 minutes to obtain K₃Mg₂Cl₇。

Invention K₃Mg₂Cl₇According to the technical scheme, the preparation method takes the induction furnace as a container, wherein the induction furnace adopts quartz to cast charging materials, aluminum is firstly added into the induction furnace, the temperature is heated to 1100 ℃, the aluminum is heated and melted to obtain an aluminum melt, and then the aluminum melt is added into the induction furnace according to a preset proportion to prepare K₃Mg₂Cl₇The raw material is obtained by taking molten aluminum as a heat source, keeping the temperature at 700-800 ℃, and stirring to obtain K₃Mg₂Cl₇Compared with the prior art, the method avoids the preparation of K₃Mg₂Cl₇The pollution of iron, nickel and chromium in the process is avoided, and the K is further improved₃Mg₂Cl₇The purity of (2).

Drawings

FIG. 1 shows a K according to the invention₃Mg₂Cl₇The preparation method is as followsA flow diagram of a preferred embodiment.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to FIG. 1, FIG. 1 shows a block diagram of a K-shaped component of the present invention₃Mg₂Cl₇The flow chart of the preferred embodiment of the preparation method.

As shown in FIG. 1, in this embodiment, K is₃Mg₂Cl₇The preparation method comprises the following steps:

step S10, adding aluminum into the induction furnace, heating to 1100 ℃, and heating and melting the aluminum to obtain aluminum melt, wherein K is considered in the embodiment₃Mg₂Cl₇The melting point of (a) was 427 ℃ and therefore, the induction furnace used in this example cast the charging material in quartz.

Wherein the frequency of the induction furnace is 50-150 HZ.

Step S20, adding preparation K into the induction furnace according to a preset proportion₃Mg₂Cl₇The raw material is obtained by taking the aluminum melt as a heat source, keeping the temperature at 700-800 ℃, and stirring to obtain K₃Mg₂Cl₇Wherein the preparation K₃Mg₂Cl₇The raw materials comprise KCl and MgCl₂The KCl and MgCl₂Is 3: 2.

Wherein, in this embodiment, K is₃Mg₂Cl₇Can be used for 5 series high magnesium alloy products, and has good effect of preventing magnesium burning loss and aluminum oxidation in 5 series product aluminum refining. Due to preparation of K₃Mg₂Cl₇KCl and MgCl as raw materials₂And K obtained by the preparation₃Mg₂Cl₇Is less than the density of the aluminum melt, so after the aluminum alloy refining agent is prepared, the prepared K is convenient to prepare₃Mg₂Cl₇Pouring out from the induction furnace to realize K₃Mg₂Cl₇And separation of the aluminum melt.

The step S20 is to sense theAdding K into the furnace according to a preset proportion₃Mg₂Cl₇The raw material is obtained by taking the aluminum melt as a heat source, keeping the temperature at 700-800 ℃, and stirring to obtain K₃Mg₂Cl₇The method specifically comprises the following steps:

adding K into the induction furnace according to a preset proportion₃Mg₂Cl₇The raw material is prepared by taking the aluminum melt as a heat source, keeping the temperature at 700-800 ℃, stirring for 30 minutes by using a graphite stirrer at the stirring speed of 10-20 r/min, and preserving the heat for 20 minutes to obtain K₃Mg₂Cl₇。

Invention K₃Mg₂Cl₇According to the technical scheme, an induction furnace is taken as a container, aluminum is added into the induction furnace, the induction furnace is heated to 1100 ℃, the aluminum is heated and melted to obtain an aluminum melt, and then the aluminum melt is added into the induction furnace according to a preset proportion to prepare K₃Mg₂Cl₇The raw material is obtained by taking molten aluminum as a heat source, keeping the temperature at 700-800 ℃, and stirring to obtain K₃Mg₂Cl₇Compared with the prior art, the method avoids the preparation of K₃Mg₂Cl₇The pollution of iron, nickel and chromium in the process is avoided, and the K is further improved₃Mg₂Cl₇The purity of (2).

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (3)

1. K₃Mg₂Cl₇The method for preparing (c), wherein the method comprises the steps of:

adding aluminum into an induction furnace, heating to 1100 ℃, and melting the aluminum to obtain an aluminum melt, wherein the induction furnace casts and forges materials by quartz;

adding preparation K into the induction furnace according to a preset proportion₃Mg₂Cl₇The raw materials of (1), toThe aluminum melt is used as a heat source, the temperature is kept at 700 ℃ and 800 ℃, and the mixture is stirred to obtain K₃Mg₂Cl₇Wherein the preparation K₃Mg₂Cl₇The raw materials comprise KCl and MgCl₂The KCl and MgCl₂Is 3: 2.

2. K according to claim 1₃Mg₂Cl₇The preparation method is characterized in that the frequency of the induction furnace is 50-150 HZ.

3. K according to claim 2₃Mg₂Cl₇The method is characterized in that K is added into the induction furnace according to a preset proportion₃Mg₂Cl₇The raw material is obtained by taking the aluminum melt as a heat source, keeping the temperature at 700-800 ℃, and stirring to obtain K₃Mg₂Cl₇Comprises the following steps:

adding K into the induction furnace according to a preset proportion₃Mg₂Cl₇The raw material is prepared by taking the aluminum melt as a heat source, keeping the temperature at 700-800 ℃, stirring for 30 minutes by using a graphite stirrer at the stirring speed of 10-20 r/min, and preserving the heat for 20 minutes to obtain K₃Mg₂Cl₇。

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