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Composite treatment agent material and preparing method thereof

A composite treatment and composite powder technology, which is applied in the field of alloy modifiers, can solve the problems of weak luminescence performance of hypereutectic aluminum-silicon alloys, inability to modify simultaneously, and poor effect of modifiers, etc., so as to eliminate the reduction of catalytic activity and improve the deterioration Treatment efficiency, effect of eliminating slag removal steps

Inactive Publication Date: 2019-06-28
ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The technical problem to be solved by the present invention: Aiming at the problems that in the current hypereutectic aluminum-silicon alloy smelting process, it is impossible to simultaneously modify and remove slag and gas, and the commonly used modifiers are not effective and easy to burn, the present invention provides a composite treatment agent material, to solve the above problems, and at the same time enable the hypereutectic Al-Si alloy to obtain weaker luminescent properties

Method used

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  • Composite treatment agent material and preparing method thereof
  • Composite treatment agent material and preparing method thereof
  • Composite treatment agent material and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: prepare composite treatment agent material as follows:

[0036] 1. Preparation of raw materials:

[0037] Sodium acetate trihydrate, aluminum oxide, potassium fluoroaluminate, strontium nitrate, potassium chloride, sodium fluoroaluminate, sodium molybdate, praseodymium nitrate, sodium chloride, boron carbide, calcium oxide, zinc oxide, and Al have a purity greater than 99.9 wt%, the particle size is 150 mesh, and the tar is medium and low temperature coal tar.

[0038] The composition of pyrophyllite is: Al 2 o 3 26wt%, K 2 O+Na 2 O is 0.05wt%, Fe 2 o 3 +TiO 2 0.1wt%, CaO+MgO is 0.04wt%, and the balance is SiO 2 , loss on ignition ≤ 5%, water content less than 0.3%, particle size of pyrophyllite powder is 150 mesh.

[0039] The composition of the hypereutectic aluminum-silicon alloy is Si 20%, Cu 1.0%, Ni 1.1%, Mg 1.0%, impurity ≤ 0.6%, and Al in balance.

[0040] 2. Preparation of composite treatment agent materials

[0041] (1) Rare earth mol...

Embodiment 2

[0051] Embodiment 2: prepare composite treatment agent material as follows:

[0052] 1. Preparation of raw materials:

[0053] Sodium acetate trihydrate, aluminum oxide, potassium fluoroaluminate, strontium nitrate, potassium chloride, sodium fluoroaluminate, sodium molybdate, praseodymium nitrate, sodium chloride, boron carbide, calcium oxide, zinc oxide, and Al have a purity greater than 99.9 wt%, the particle size is 250 mesh, and the tar is high temperature coal tar.

[0054] The composition of pyrophyllite is: Al 2 o 3 36wt%, K 2 O+Na 2 O is 0.5wt%, Fe 2 o 3 +TiO 2 0.8wt%, CaO+MgO is 1.0wt%, and the balance is SiO 2 , loss on ignition ≤ 5%, water content less than 0.3%, particle size of pyrophyllite powder is 250 mesh.

[0055] The composition of the hypereutectic aluminum-silicon alloy is Si 24%, Cu 2.0%, Ni 1.6%, Mg 1.6%, impurity ≤ 0.6%, and the balance Al.

[0056] 2. Preparation of composite treatment agent materials:

[0057] (1) Rare earth molybdate com...

Embodiment 3

[0067] Embodiment 3: prepare composite treatment agent material as follows:

[0068] 1. Preparation of raw materials:

[0069] Sodium acetate trihydrate, aluminum oxide, potassium fluoroaluminate, strontium nitrate, potassium chloride, sodium fluoroaluminate, sodium molybdate, praseodymium nitrate, sodium chloride, boron carbide, calcium oxide, zinc oxide, and Al have a purity greater than 99.9 wt%, the particle size is 200 mesh, and the tar is medium and low temperature coal tar.

[0070] The composition of pyrophyllite is: Al 2 o 3 31wt%, K 2 O+Na 2 O is 0.275wt%, Fe 2 o 3 +TiO 2 is 0.45wt%, CaO+MgO is 0.55wt%, and the balance is SiO 2 , loss on ignition ≤ 5%, water content less than 0.3%, particle size of pyrophyllite powder is 200 mesh.

[0071] The composition of the hypereutectic aluminum-silicon alloy is Si 22%, Cu 1.5%, Ni 1.35%, Mg 1.3%, impurity ≤ 0.6%, and the balance Al.

[0072] 2. Preparation of composite treatment agent materials

[0073] (1) Rare ea...

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Abstract

The invention discloses a composite treatment agent material. The material is composed of, by weight percent, 13 to 18% of sodium acetate trihydrate, 5 to 9% of aluminium oxide, 5 to 8% of potassium fluoroaluminate, 13 to 16% of strontium nitrate, 3 to 7% of potassium chloride, 12 to 16% of sodium fluoroaluminate, 12 to 15% of clay compound powder, 2 to 4% of sodium chloride and the balance Al. Amolybdic acid rare earth composite can change the form and the size of a harmful phase formed by impurity elements, the luminous potential is achieved, pyrophillite can serve as a modifier carrier toremove gas and slag, the smelting efficiency is improved, a three-step raw material adding method is adopted in the preparing method, three alterants of sodium, strontium, and rare earth are successfully combined, the alteration activity is reserved, the eutectic silicon is effectively refined, the alteration effect is more stable, burning losses of an independent alterant during high-temperaturesmelting can be prevented or slowed down, and the effective alteration time is prolonged.

Description

technical field [0001] The invention relates to the field of alloy modifiers, in particular to a composite treatment agent material and a preparation method thereof. Background technique [0002] The silicon structure of the hypereutectic aluminum-silicon alloy is composed of coarse five-lobed star-shaped primary silicon and long needle-shaped eutectic silicon. These silicon phases will severely split the Al matrix, and at the tip and corners of the Si phase Stress concentration is caused, the alloy is easy to form cracks along the grain boundaries, or the plate-shaped Si itself cracks, making the alloy brittle, the mechanical properties, especially the elongation, are significantly reduced, and the cutting function is not good. In order to change the existing state of silicon and improve the mechanical properties of the alloy, a modifier is generally added to the alloy to refine the primary silicon and eutectic silicon. [0003] There are many studies on modifiers at home ...

Claims

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Application Information

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IPC IPC(8): C22C1/06C22C1/02C22C21/04
Inventor 赵浩峰夏俊于鹏陈姗姗
Owner ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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