Under the current quartz sand processing technology conditions, the main quartz sand processing methods include the following three categories: physical/mechanical methods, such as magnetic separation, gravity separation, flotation, ultrasonic beneficiation and water washing, etc. ;Chemical method, namely pickling method; and microbiological method.
In order to effectively reduce the content of impurities in quartz sand, the industry usually uses an pickling process to purify quartz sand. Pickling uses quartz to be insoluble in acid (except HF), and other impurity minerals can be acidified. Liquid dissolution characteristics.
In order to effectively reduce the content of impurities in quartz sand, the industry usually uses an pickling process to purify quartz sand. Pickling uses quartz to be insoluble in acid (except HF), and other impurity minerals can be acidified. Liquid dissolution characteristics.
1) Prepare the pickling liquid to be used in quartz sand pickling.
2) Add quartz sand to the pickling liquid to ensure that the acid liquid completely covers the quartz sand.
3) The quartz sand is soaked in the acid solution for a certain period of time. The soaking time can be increased or decreased according to the yellow skin condition of the quartz sand. Enterprises with heating equipment can use heating equipment to reduce soaking time.
4) Acid recovery and acidification reduction.
5) Dry quartz sand. After the quartz sand is deacidified, the water must be drained out, and then the quartz sand must be placed in a drying equipment to dry.
6) Screening, color sorting and packaging, etc.