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A kind of compound manufacturing method of acid leaching stirrer

A manufacturing method, agitator technology, applied in the direction of coating, molten spraying, metal material coating technology, etc., can solve the problems of service life reduction, achieve the best corrosion resistance and erosion resistance, high hardness, Effect of enhancing corrosion resistance and wear resistance

Active Publication Date: 2021-10-08
INST OF APPLIED PHYSICS JIANGXI ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the acid leaching stirring shaft and paddles are damaged by corrosion of chlorine and fluoride ions in the acidic system and abrasion of the ore pulp during the leaching process, resulting in reduced service life, the present invention proposes a composite manufacturing method of the stirring shaft and paddles, namely A layer of iron-based amorphous coating is deposited on the surface of carbon steel or stainless steel substrate by supersonic flame spraying technology, which combines the excellent mechanical properties of the substrate material with the high corrosion resistance and high wear resistance of the amorphous coating to form a composite Material stirring shaft and paddle

Method used

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  • A kind of compound manufacturing method of acid leaching stirrer
  • A kind of compound manufacturing method of acid leaching stirrer
  • A kind of compound manufacturing method of acid leaching stirrer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A compound manufacturing method for acid leaching stirring shaft and blade, the steps are as follows:

[0027] (1) Select 45 steel as the base material, after quenching at 840±10℃×2h and then tempering at 600±10℃×2h, process a cylindrical stirring shaft with a length of 4.8m and a diameter of 0.17m;

[0028] (2) After alcohol degreasing and cleaning, use a special sandblasting machine to use 20-40 mesh white corundum sand particles and a blasting pressure of 0.5MPa to roughen the surface of the substrate with a roughness of Ra5;

[0029] (3) The chemical ratio (mass percentage) of iron-based amorphous powder is: chromium 18%, molybdenum 5%, tungsten 10%, niobium 12%, lutetium 2%, boron 4%, manganese 5%, carbon 2% , 3% silicon, 1% dysprosium, and the balance is iron.

[0030] (4) The supersonic flame spraying technique is used to prepare an amorphous coating on the surface of the pretreated substrate, and the average thickness of the coating is 150 μm. Spraying paramet...

Embodiment 2

[0033] A compound manufacturing method for acid leaching stirring shaft and blade, the steps are as follows:

[0034] (1) Select 304 steel as the base material, after quenching at 1000±10℃×2h and then tempering at 650±10℃×2h, it is processed into figure 1 The stirring blade shown;

[0035] (2) After alcohol degreasing and cleaning, use a special sandblasting machine to use 20-40 mesh white corundum sand particles and a blasting pressure of 0.5MPa to roughen the surface of the substrate with a roughness of Ra6;

[0036] (3) The chemical ratio (mass percentage) of iron-based amorphous powder is: chromium 18%, molybdenum 5%, tungsten 10%, niobium 12%, lutetium 2%, boron 4%, manganese 5%, carbon 2% , 3% silicon, 1% dysprosium, and the balance is iron.

[0037] (4) The supersonic flame spraying technique is used to prepare an amorphous coating on the surface of the pretreated substrate, and the average thickness of the coating is 150 μm. Spraying parameters are: kerosene flow ra...

Embodiment 3

[0040] (1) Select 45 steel as the base material, after quenching at 840±10℃×2h and then tempering at 600±10℃×2h, process a cylindrical stirring shaft with a length of 4.8m and a diameter of 0.17m;

[0041] (2) After alcohol degreasing and cleaning, use a special sandblasting machine to use 20-40 mesh white corundum sand particles and a blasting pressure of 0.5MPa to roughen the surface of the substrate with a roughness of Ra5;

[0042] (3) The formula of iron-based amorphous mass percentage is: chromium 18%, molybdenum 5%, tungsten 10%, boron 4%, manganese 5%, carbon 2%, silicon 3%, dysprosium 1%, and the balance is iron. (not adding niobium, lutetium) all the other are the same as embodiment 1.

[0043] (4) The supersonic flame spraying technique was used to prepare an amorphous coating on the surface of the pretreated substrate (the spraying process was the same as in Example 1), and the average thickness of the coating was 150 μm. Spraying parameters are: kerosene flow rat...

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Abstract

The invention relates to a compound manufacturing method of an acid leaching stirrer, which uses iron-based amorphous powder as a spraying material, adopts supersonic flame spraying technology to heat and accelerate the powder, and prepares a layer of 150-250 μm thick on the surface of the stirring shaft or blade Iron-based amorphous coating, the chemical ratio of iron-based amorphous powder by mass percentage: chromium 0-25%, molybdenum 0-10%, tungsten 0-5%, niobium 0-12%, lutetium 0-4%, 0-7% manganese, 0-5% boron, 0-4% carbon, 0-3% silicon, 0-2% rare earth elements, and the rest is iron; the service life of the prepared composite stirring shaft and blade is several times For traditional stainless steel products.

Description

technical field [0001] The invention relates to a compound manufacturing method for depositing an amorphous coating on the surface of an acid leaching stirring shaft and a paddle blade by using a supersonic flame spraying technology, and belongs to the field of material surface engineering. Background technique [0002] At present, hydrocopper-lead-zinc smelting is the most important smelting method in the world, and its output accounts for more than 80% of the total output. In order to completely dissolve, separate and remove copper, lead and zinc, and at the same time fully enrich and recover valuable metals such as cadmium, cobalt, and nickel, stirring plays an important role. Therefore, the agitator becomes the key point to realize the above functions equipment. [0003] The stirrer consists of two parts: a stirring paddle and a stirring shaft. Since hydrometallurgy basically achieves solid-liquid mixing, dissolution, and impurity removal in a high-acid, high-corrosion...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/129C22C45/02C23C4/067
CPCC22C45/02C23C4/067C23C4/129
Inventor 张林伟周玉林王日昕余玖明郝长夷王佳伟杨学兵曾卫军
Owner INST OF APPLIED PHYSICS JIANGXI ACADEMY OF SCI
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