Tin tungsten sand gravity separation process flow

Tin tungsten sand gravity separation process flow

Tin tungsten sand is an important metal ore mainly used for manufacturing materials such as high-temperature alloys and tungsten steel. During the extraction process of tin tungsten sand, multiple re selections are required to improve the grade and recovery rate of tin tungsten sand. This article will introduce the process flow of tin tungsten sand gravity separation, helping readers understand the extraction process of tin tungsten sand.

1、 Properties of Tin Tungsten Sand

Tin tungsten sand is a black or brown ore, mainly composed of tungsten oxide and tin oxide. Tin tungsten sand has high hardness, high density, and good wear and corrosion resistance. The grade of tin tungsten sand is generally between 0.2% and 0.5%.

2、 Extraction process of tin tungsten sand

The extraction process of tin tungsten sand mainly includes steps such as crushing, grinding, gravity separation, flotation, desliming, and drying. Among them, re selection is the most critical step in the process of extracting tin tungsten sand, and it is also an important factor affecting the grade and recovery rate of tin tungsten sand.

3、 Tin tungsten sand gravity separation process flow

The process flow of tin tungsten sand gravity separation mainly includes three steps: rough selection, intermediate selection, and selection.

1. Rough selection

Rough selection is the first step in the process of heavy selection of tin tungsten sand, with the main purpose of removing impurities and low-grade minerals from the tin tungsten sand. Rough selection generally adopts the heavy medium separation method, which uses a heavy liquid to separate tin tungsten sand and impurities. Common heavy liquids include ferric chloride, Baryte, heavy iron ore, etc. After rough selection, the grade of tin tungsten sand can be increased to about 1-2%.

2. Successful selection

Intermediate selection is the second step in the process of heavy selection of tin tungsten sand, with the main purpose of further improving the grade of tin tungsten sand. The medium separation method or gravity separation method is generally used for intermediate selection. Common heavy liquids include Baryte, heavy iron ore, etc. After selection, the grade of tin tungsten sand can be increased to around 2% to 4%.

3. Selected

Selection is the final step in the process of heavy selection of tin tungsten sand, with the main purpose of completely removing impurities and low-grade minerals from the tin tungsten sand, so as to achieve the highest grade of tin tungsten sand. Selection generally adopts flotation or electric separation methods. The flotation method utilizes the different buoyancy of tin tungsten sand and impurities in water to separate them. The electrical separation method utilizes the different electrical properties of tin tungsten sand and impurities in an electric field to separate them. After selection, the grade of tin tungsten sand can be increased to around 5%~10%.

Summary

The process flow of tin tungsten sand gravity separation is the most critical step in the extraction process of tin tungsten sand, and is also an important factor affecting the grade and recovery rate of tin tungsten sand. The gravity separation process of tin tungsten sand includes three steps: rough selection, intermediate selection, and selection. During the operation process, it is necessary to select a suitable gravity separation process based on the properties and requirements of tin tungsten sand, in order to improve the grade and recovery rate of tin tungsten sand.

Tin tungsten sand gravity separation process flow