Technological process of selecting sand tin ore

Technological process of selecting sand tin ore

Selection of tin ore refers to the process of separating tin ore from tin containing placer ore through physical and chemical methods. The process flow of selecting sand tin ore refers to a series of process flows used in the process of selecting sand tin ore. This article will introduce the process flow and operating steps of selecting sand tin ore.

1、 Process flow of selecting sand tin ore

The process flow of selecting sand tin ore includes the following steps:

1. Crushing: Crushing the raw ore to make it suitable for selecting different particle sizes.

2. Grinding: Grinding the crushed ore to make it finer for easy sorting.

3. Sorting: The ground ore is sorted to separate tin bearing and non tin bearing placers.

4. Flotation: Flotation of tin containing placer ore to separate tin concentrate and tailings.

5. Grinding: Grind the tin concentrate finely to facilitate the next step of sorting.

6. Re selection: The finely ground tin concentrate is re selected to separate high-grade and low-grade tin concentrates.

7. Tin smelting: Refining high-grade tin concentrate to obtain pure tin.

II. Operation Steps

1. Crushing

The crushing of selected sand tin ore generally adopts jaw crusher and cone crusher. When operating, the original ore should be cleaned first and divided into different particle sizes. Then, the ore is fed into a crusher for crushing, and the particle size of the crushed ore should meet the requirements for sorting.

2. Grinding

Grinding is the grinding of crushed ore for easy sorting. The grinding equipment includes ball mills, rod mills, and AG mills. During operation, the crushed ore should first be fed into the grinding machine, and then an appropriate amount of water and grinding medium should be added for grinding. The grinding time and the type and amount of grinding medium will both affect the grinding effect.

3. Selection

Sorting is the process of separating the ground ore into tin bearing and non tin bearing placers. Selection equipment includes heavy media sorting machines, centrifuges, and vibrating screens. During operation, the first step is to feed the ground ore into the sorting machine, and then separate the tin-containing and non tin-containing placers through gravity, centrifugal force, or vibration force.

4. Flotation

Flotation is the process of separating tin concentrate and tailings from tin containing placer ore. The flotation equipment includes flotation machines and air flotation machines. During operation, the tin bearing placer shall be sent to the flotation machine first, and then an appropriate amount of reagent shall be added to make it produce foam, float the tin bearing placer, and separate the tin concentrate and tailings.

5. Grinding

Grinding is the process of grinding the tin concentrate to facilitate the next step of sorting. The equipment for grinding is the same as for grinding, but the requirements for grinding are higher. During operation, appropriate grinding equipment and media should be selected based on the particle size and sorting requirements of the tin concentrate, and the grinding time and amount of grinding media should be controlled.

6. Re selection

Re selection is the process of re selecting the finely ground tin concentrate to separate high-grade and low-grade tin concentrates. The equipment for re selection includes heavy media sorting machines, centrifuges, and vibrating screens. During operation, appropriate re selection equipment should be selected based on the particle size and sorting requirements of the tin concentrate, and the re selection time and the amount of sorting medium should be controlled.

7. Tin smelting

Tin smelting is the process of refining high-grade tin concentrate to obtain pure tin. There are many methods and equipment for refining tin, including electrolysis, roasting reduction, and oxidation roasting. During operation, appropriate tin smelting methods and equipment should be selected based on the grade of tin concentrate and the requirements for tin smelting, and parameters such as temperature, time, atmosphere, and reagents for tin smelting should be controlled.

3、 Summary

The process of selecting sand tin ore is a complex process that requires the use of multiple process flows and equipment. During operation, appropriate process flow and equipment should be selected based on the properties of the ore, sorting requirements, and equipment characteristics, and operating parameters should be controlled to ensure sorting effect and production efficiency.

Technological process of selecting sand tin ore