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A method for regenerating water glass sand by using calcium carbide slag

A technology of water glass sand and carbide slag, which is applied in the cleaning/processing machinery of casting materials, casting molding equipment, metal processing equipment, etc., to achieve the effects of high economic benefits, fast regeneration, and saving fresh water resources

Active Publication Date: 2022-05-10
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to provide a method for regenerating water glass sand by using calcium carbide slag, which is to use acetylene to prepare industrially discharged calcium carbide slag and calcium carbide slag clear liquid waste to regenerate water glass sand without consuming fresh water resources. Under the circumstances, the waste alkaline carbide slag is used to complete the efficient regeneration of water glass sand; this method greatly improves the economic benefits of the water glass sand regeneration process, and provides a new technical route for the regeneration of water glass sand, and the regenerated sand The quality fully meets the technical index requirements of the existing foundry industry

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Embodiment 1

[0053] The invention relates to a method for regenerating sodium silicate sand by using calcium carbide slag. The mass parts of raw materials used in the method are: 100 parts of sodium silicate casting waste sand, 70 parts of calcium carbide slag clear liquid and 1 part of calcium carbide slag; The regeneration method includes the following steps:

[0054] Step 1. Preparation of carbide slag powder: precipitate and separate the waste carbide slag and carbide slag clear liquid discharged from the preparation of acetylene, collect the carbide slag clear liquid and carbide slag mud, dry and grind the carbide slag mud for 200 mesh to prepare carbide slag powder;

[0055] Step 2. Screen breaking: use mechanical vibration to break and screen the water glass casting waste sand to remove the large stones and wood blocks in the water glass casting waste sand;

[0056] Step 3: magnetic separation: roll magnetic separation is carried out for the broken sodium silicate casting waste sand wit...

Embodiment 2

[0063] The invention relates to a method for regenerating sodium silicate sand by using calcium carbide slag. The mass parts of raw materials used in the method are: 100 parts of sodium silicate casting waste sand, 80 parts of calcium carbide slag clear liquid and 1.5 parts of calcium carbide slag; The method comprises the following steps:

[0064] Step 1. Preparation of carbide slag powder: precipitate and separate the waste carbide slag and carbide slag clear liquid discharged from the preparation of acetylene, collect the carbide slag clear liquid and carbide slag mud, dry and grind the carbide slag mud for 250 mesh to prepare carbide slag powder;

[0065] Step 2. Screen breaking: use mechanical vibration to break and screen the water glass casting waste sand to remove the large stones and wood blocks in the water glass casting waste sand;

[0066] Step 3: magnetic separation: roll magnetic separation is carried out for the broken sodium silicate casting waste sand with electro...

Embodiment 3

[0073] The invention relates to a method for regenerating sodium silicate sand by using calcium carbide slag. The mass parts of raw materials used in the method are: 100 parts of sodium silicate casting waste sand, 75 parts of calcium carbide slag clear liquid and 1.25 parts of calcium carbide slag; The method comprises the following steps:

[0074] Step 1. Preparation of carbide slag powder: precipitate and separate the waste carbide slag and carbide slag clear liquid discharged from the preparation of acetylene, collect the carbide slag clear liquid and carbide slag mud, dry and grind the carbide slag mud for 300 mesh to prepare carbide slag powder;

[0075] Step 2. Screen breaking: use mechanical vibration to break and screen the water glass casting waste sand to remove the large stones and wood blocks in the water glass casting waste sand;

[0076] Step 3: magnetic separation: roll magnetic separation is carried out for the broken sodium silicate casting waste sand with electr...

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Abstract

The invention discloses a method for regenerating water glass sand by using calcium carbide slag, which belongs to the technical field of casting waste sand regeneration and includes water glass casting waste sand, calcium carbide slag clear liquid and carbide slag raw materials. The regeneration method specifically includes preparing calcium carbide slag powder, Water glass casting waste sand broken screen, magnetic separation, soaking, regeneration, dehydration, washing, drying and other steps. In the present invention, the calcium carbide slag and the calcium carbide slag clear liquid, which are wastes discharged from the preparation of acetylene, are used to efficiently regenerate the water glass sand, and the chemical reaction between the calcium carbide slag and the water glass is used to complete the regeneration of the water glass sand at the same time without consuming fresh water resources. While saving resources, the existing waste industrial products are recycled, and because the regeneration process is a physical and chemical synergistic reaction, the regeneration speed is higher than that of fresh water, and the energy consumption is lower, creating good economic benefits.

Description

technical field [0001] The invention relates to the technical field of regeneration of casting waste sand, in particular to a method for regenerating sodium silicate sand with carbide slag. Background technology [0002] Casting technology is one of the important technical supports of the manufacturing industry. It has unique advantages in the machinery industry, especially in complex machinery manufacturing. In recent years, with the improvement of manufacturing accuracy and environmental protection requirements, sodium silicate sand has gradually attracted extensive attention because of its non-toxic and harmless, high bonding strength, good manufacturing accuracy and small amount of sand. More and more enterprises adopt sodium silicate sand casting process. At the same time, a large number of strong alkaline casting waste sand are discharged. The sand used in sodium silicate sand is all kinds of high-quality sand. It is a huge waste of resources and will have a great impact on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C5/00B22C5/04B22C5/06B22C5/08
CPCB22C5/00B22C5/04B22C5/06B22C5/0409B22C5/08
Inventor 赵庆新邱永祥户伟华郭维超贾雅丽王新宇彭坦辽张卉白艳颖王帅
Owner YANSHAN UNIV
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