Regeneration method of organic waste sand

An organic and waste sand technology, which is used in the cleaning/processing machinery of casting materials, casting molding equipment, metal processing equipment, etc. , the effect of increasing the difficulty of regeneration

Pending Publication Date: 2021-08-20
柳州柳晶环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic organic waste sand regeneration treatment methods mostly adopt thermal method plus mechanical grinding process, ofte

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] A regeneration method of organic waste sand, organic waste sand contains gravel, bentonite, pulverized coal, phenolic resin, and other substances, including the following steps:

[0028] (1) Broken: Use the crusher to break the organic waste sand, and the organic waste sand after crushing is 0.8 mesh sieve. ;

[0029] (2) Magnetic option: Organic waste sand after magnetic separation of magnetic selection;

[0030] (3) Acid immersion: The amount of organic waste sand after the magnetic dissection of the magnetic acid was allowed with a pH value of 4-5, and the amount of salicylic acid solution was used as 3% of the organic waste sand after the magnetic separation;

[0031] (4) Hot air grinding: Grinding the organic waste sand after acidity into the hot air grinder 40min in 1400r / min, while blowing the wind, the wind, the hot air grinder is a disclosure of China's utility model patent publication for CN212917511U Sand regeneration abrasive device, the air...

Example Embodiment

[0034] Example 2

[0035] A regeneration method of organic waste sand, organic waste sand contains gravel, bentonite, pulverized coal, phenolic resin, and other substances, including the following steps:

[0036] (1) Broken: Use the crusher to break the organic waste sand, and the organic waste sand after crushing is 0.8 mesh sieve. ;

[0037] (2) Magnetic option: Organic waste sand after magnetic separation of magnetic selection;

[0038] (3) Acid immersion: The citric acid waste after the pH is soaked in the citric acid solution of 4-5 for 2 hours, the amount of the citric acid solution is 2% of the organic waste after the magnetic separation;

[0039] (4) Hot air grinding: The organic waste sand after acid is given to the hot air grinding machine with 1500r / min to grind 35min, while blowing the wind, the wind, the hot air grinder is a disclosure of China's utility model patent publication for CN212917511U. Sand regenerative abrasive device, the air air grinding machine is 210...

Example Embodiment

[0042] Example 3

[0043] A regeneration method of organic waste sand, organic waste sand contains gravel, bentonite, pulverized coal, phenolic resin, and other substances, including the following steps:

[0044] (1) Broken: Use the crusher to break the organic waste sand, and the organic waste sand after crushing is 0.8 mesh sieve. ;

[0045] (2) Magnetic option: Organic waste sand after magnetic separation of magnetic selection;

[0046] (3) Acid immersion: The amount of organic waste sand after the magnetic waste sand is soaked with a pH value of 4-5, and the amount of citric acid solution is used in the amount of organic waste sand after the magnetic separation;

[0047] (4) Hot air grinding: The organic waste sand after acid immersion is given to the hot air grinder to grind the XX hours at 1100r / min, and simultaneously blow up the wind, the wind, the hot air grinder is a kind of "Chinese practical utility in China" Waste sand regeneration abrasive device, the air air grind...

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PUM

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Abstract

The invention relates to the technical field of waste sand regeneration, in particular to a regeneration method of organic waste sand. The regeneration method comprises the following steps of (1) crushing, specifically, crushing organic waste sand by using a crusher; (2) magnetic separation, specifically, carrying out magnetic separation on the crushed organic waste sand by using a magnetic separator; (3) acid leaching, specifically, soaking the organic waste sand subjected to magnetic separation with a weak acid solution; (4) hot air grinding, specifically, feeding the organic waste sand subjected to acid leaching into a hot air grinding machine to be ground, and supplying air and exhausting air at the same time; (5) roasting, specifically, roasting the ground organic waste sand to obtain regenerated sand; and (6) screening and packaging. According to the regeneration method of the organic waste sand, the weak acid solution is adopted to soak the organic waste sand before roasting, the weak acid can chemically react with bentonite, the cohesiveness of the bentonite is reduced, and surface substances of the organic waste sand can easily fall off during subsequent grinding and roasting.

Description

technical field [0001] The invention relates to the technical field of waste sand regeneration, in particular to a regeneration method of organic waste sand. Background technique [0002] With the rapid development of domestic high-speed rail, heavy trucks, loaders, shipbuilding and nuclear industries, the demand for large steel castings is increasing, which provides a good opportunity for the development of my country's foundry industry. The production of excellent large steel castings not only It requires a mature casting process and excellent molding materials for matching. Organic coated sand is adopted by many foundries because of its high strength, fast efficiency and wide application range. [0003] The ratio of castings and molding materials is usually 1:1, that is, for every ton of castings produced, 1 ton of molding material sand is consumed and 1 ton of organic waste sand is discharged. The annual domestic casting output is over one million tons. It can be seen th...

Claims

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Application Information

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IPC IPC(8): B22C5/00B22C5/04B22C5/06B22C5/08
CPCB22C5/00B22C5/0409B22C5/06B22C5/08
Inventor 胡胜利任文虎吴武灿邹志平
Owner 柳州柳晶环保科技有限公司
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