Tungsten ore sand extraction process flow

Tungsten ore sand extraction process flow

Tungsten is a very important metal with characteristics such as high melting point, high density, high strength, and high hardness, making it widely used in aviation, aerospace, nuclear energy, electronics, chemical and other fields. Tungsten ore is the main ore of tungsten, the most common of which are Wolframite and Scheelite. So how to extract tungsten ore? Next, let's introduce the process flow of tungsten ore sand extraction. 1. Mineral processing first requires separation of impurities and useful components from the original ore. The general methods of mineral processing include gravity separation, flotation, magnetic separation, etc. Among them, the gravity separation method is the most commonly used method, which separates ore and impurities through the different settling rates of the ore under the action of gravity. 2、 After beneficiation treatment, it is also necessary to perform beneficiation to separate tungsten from the ore. The selected methods include gravity separation, flotation, magnetic separation, etc. Among them, the gravity separation method is the most commonly used method, which separates ore and impurities through the different settling rates of the ore under the action of gravity. 3、 After careful treatment, roasting is also necessary. Roasting is to carry out Redox reaction of ore at high temperature, so that tungsten in tungsten ore can be converted into tungsten oxide. During the roasting process, it is necessary to control parameters such as temperature and oxygen concentration to ensure the smooth progress of the reaction. 4、 After roasting, acid leaching is also required. Acid leaching involves dissolving tungsten oxide in an acidic solution to separate tungsten. The methods of acid leaching include sulfuric acid leaching, hydrofluoric acid leaching, etc. Sulfuric acid leaching is the most commonly used method, which involves reacting tungsten oxide into a sulfuric acid solution to dissolve the tungsten. 5、 After acid leaching treatment, precipitation is also required. Precipitation is the precipitation of tungsten from a solution to form tungsten powder. The precipitation methods include ammonia precipitation, sodium hydroxide precipitation, etc. Ammonia precipitation is the most commonly used method, which involves adding ammonia to the solution to precipitate tungsten. 6、 After precipitation treatment, calcination is also required. Calcination is the process of sintering tungsten powder at high temperatures, allowing it to become tungsten particles. During the calcination process, it is necessary to control parameters such as temperature and time to ensure the quality of sintering. After the finished product is calcined, tungsten particles can be obtained. Tungsten particles can be used to manufacture products such as tungsten wires and tungsten alloys. Summary: The tungsten ore extraction process includes steps such as beneficiation, selection, roasting, acid leaching, precipitation, and calcination. Each step requires strict control of parameters to ensure the quality of the extraction. Tungsten is a very important metal that has been widely used in many fields, so the tungsten ore extraction process is also very important.

Tungsten ore sand extraction process flow