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Method for preparing porous aluminum pore-forming salt pill

A technology of porous aluminum and salt pellets, which is applied in the field of salt pellet preparation, can solve the problems of not clearly giving the selection method of NaCl raw materials, not being able to use it, and not involving environmental friendly issues, etc.

Active Publication Date: 2014-07-09
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if the cheap second-grade sun-dried industrial salt is used to make salt balls or salt pills, the first time it can be made does not mean that the second time the recycled salt can also be used to make salt balls or salt pills. Obviously, For the secondary use of recovered salt, the aluminum element brought in after it contacts porous aluminum, the "spot brine" during the salt drying process or other elements and particles mixed in the salt field, etc., use this secondary use salt as raw material to carry out The difference between the second salt ball making process and the first salt ball making process is that the first salt ball making process cannot be used to obtain new salt balls for the second time
[0014] In short, the prior art, including the invention patent CN102146532A disclosed by the Chinese Patent Office on August 10, 2011, does not clearly provide the specific raw material selection method for NaCl, nor does it involve the recycling of salt based on the circular economy and the process of using it. Relevant solutions designed for environmental friendly issues

Method used

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  • Method for preparing porous aluminum pore-forming salt pill
  • Method for preparing porous aluminum pore-forming salt pill
  • Method for preparing porous aluminum pore-forming salt pill

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The first step: preparation of salt pellet support body Simulated salt selection:

[0059] Select the salt particles of the second-grade sun-dried industrial salt produced by a salt field in Laizhou City, Shandong Province, China, which meets the GB / T5462-2003 standard for the classification of industrial salt in the People's Republic of China, and use this salt particle as seepage to prepare porous aluminum salt ball supports The material used for the first time of the body; it is also the first preparation of the present invention salt pellet simulation salt:

[0060] The second step: salt pellets to simulate salt drying:

[0061] Put the simulated salt for the preparation of salt pellets into a stainless steel tray, the thickness of the material layer is controlled at 20mm, and put it in an oven for drying. The drying temperature system is: 120°C constant temperature drying for 3 hours to discharge the material; take out the simulated salt from the oven Cool at room...

Embodiment 2

[0090] The steps and operation method are exactly the same as in Example 1, except that the conditions of the salt pills and the characterization results are different, and the differences are described as follows according to the steps:

[0091] The first step: preparation of salt pellet support body Simulated salt selection:

[0092] Get 96 grams of the granules of the salt pellet simulated salt prepared in Example 1, dope therein: 0.9 gram of aluminum trichloride, 0.1 gram of sodium bromide, 0.5 gram of calcium chloride, 1.5 gram of magnesium sulfate, 1 gram of Potassium bicarbonate; that is, in the salt particles of the second-grade sun-dried industrial salt that conforms to the GB / T5462-2003 standard of the People's Republic of China on the classification of industrial salt, the total amount of doping is 4wt.% of the total weight after doping The proportions are doped with aluminum trichloride, sodium bromide, calcium chloride, magnesium sulfate and potassium bicarbonate ...

Embodiment 3

[0114] The steps and operation method are exactly the same as in Example 1, except that the conditions of the salt pills and the characterization results are different, and the differences are described as follows according to the steps:

[0115] The first step: preparation of salt pellet support body Simulated salt selection:

[0116] The difference from "the first step" in Example 1 is attributed to: get 92 grams of the first prepared salt pill simulated salt in Example 1, and dope therein: 1.8 grams of aluminum trichloride, 0.2 grams of Sodium bromide, 1 gram of calcium chloride, 3 grams of magnesium sulfate, and 2 grams of potassium bicarbonate; that is, in the second grade sun exposure that meets the GB / T5462-2003 standard of the People's Republic of China for the classification of industrial salt In the salt particles of industrial salt, aluminum trichloride, sodium bromide, calcium chloride, magnesium sulfate and potassium bicarbonate are doped respectively according to...

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Abstract

The invention relates to a preparation method of a salt pill for a support body required for counter-pressure casting of porous aluminum or for a pore forming material for forming pores, and particularly relates to a method for manufacturing spherical salt pills applied to vacuum infiltration casting in counter-pressure casting when an interlocking pore rare-earth aluminum alloy porous metal material is cast by salt particles or salt balls or salt pills as a pore forming material or a support body. The bottleneck that the salt pills cannot be matched with a baysalt process, so as to be difficulty used in cycle in the prior art is solved, and the obtained interlocking pore aluminum is high in strength, high in interlocking rate, and good in pore frequency conversion effect.

Description

technical field [0001] The invention belongs to the field of preparation methods of salt pellets, and in particular relates to a preparation method of salt pellets for porous aluminum. Background technique [0002] The "porous aluminum" in the present invention refers to Porous aluminum, and the more precise English definition is interlocking pore aluminum or interlocking pore aluminum alloy. Its corresponding Chinese name is: "connected hole type porous aluminum" or "connected hole type porous aluminum alloy". Instead of the commonly referred to as foamed aluminum, obviously, for the latter, even if there is no communicating hole, it can also be called foamed aluminum. On the contrary, "interlocking porous aluminum" focuses on the interlocking pore ratio, which is close to 100%, which is one of the main characteristics of high-quality porous aluminum. The two concepts have been rectified, which is conducive to the dual nature of patents as legal documents and scientific a...

Claims

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Application Information

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IPC IPC(8): C22C1/08C22C21/00
Inventor 王立东涂武吴耀明王超王立民罗玖强冉旭黎书华王才宏付观井
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI