Wollastonite wall rocks are divided into marble type and skarn type. The skarn type is mainly lenticular, vesicular and irregular banded. The iron impurities in the wollastonite are generally high. The gangue is mainly garnet, diopside, calcite and quartz. Garnet and diopside are separated by strong magnetic separation, and calcite and quartz are separated by flotation. The marble type is relatively complex, mainly in the form of lumps and sacs. The wollastonite is distributed in the form of flowers and worm stripes, with low iron content. The gangue is mainly calcite and quartz and a small amount of diopside. This type of mineral is mainly separated by flotation, and calcite and quartz are separated.

Wollastonite

Beneficiation and purification method of wollastonite

At present, the separation of wollastonite mainly includes manual separation, flotation, single magnetic separation, magnetic separation flotation (electric separation). The purpose of wollastonite beneficiation is mainly to reduce iron content and separate calcite and waste rock.

Manual separation mainly refers to manual selection of rich ore or manual selection of rich ore wollastonite through conveyor belt, which is mainly applicable to ores with high wollastonite content.

Flotation is mainly based on the difference of physical and chemical properties on the surface of wollastonite and calcite. Flotation can effectively separate them, remove a large number of iron impurities, and improve the grade of wollastonite.

Single magnetic separation mainly uses weak magnetic minerals such as garnet and diopside in the raw ore, and wollastonite is not magnetic. Through dry or wet strong magnetic separation technology, wollastonite and other gangue can be separated, which can also remove a large amount of iron ore and improve the overall grade.

Magnetic separation flotation is mainly applicable to the treatment of low-grade wollastonite. First, weakly magnetic ores are separated by magnetic separation, and then wollastonite is separated from quartzite and calcite by flotation.

The latest separation method of wollastonite beneficiation - artificial intelligent photoelectric separation

Through physical separation, wollastonite, calcite, miscellaneous stone and other surface characteristics are used for separation. Before flotation or magnetic separation, raw ore is crushed and washed before entering the artificial intelligent separator.

Artificial intelligence photoelectric sorting uses surface features such as wollastonite, calcite, quartz, garnet seed stone, and miscellaneous stone to sort, judge the difference of various surface features such as color, color, texture, and shape, and establish a data model by means of artificial intelligence. To achieve the goal of precise separation of wollastonite and associated stone.

The artificial intelligent ore separator is also different from the traditional photoelectric color separator. The traditional photoelectric color separator can only separate by color difference. For example, when the associated quartz or other colors are close to the waste wollastonite, the color separator cannot accurately separate the wollastonite. Only the artificial intelligence ore separator can establish the separation model based on the multi-dimensional characteristics of good and bad materials in the raw ore, and achieve the final separation accuracy and bring out the good and bad materials with low yield through the artificial intelligence technology.

Project advantages

In the application of artificial intelligence in wollastonite, it can completely replace manual selection. If the wollastonite is well dissociated, the artificial intelligence machine can directly separate the wollastonite and tailings, which has the advantages of high efficiency, good effect and low cost. The cost is mainly the one-time equipment procurement cost and the subsequent equipment power supply cost. If the degree of dissociation is general, the ore with good wollastonite grade can also be separated by the artificial intelligence machine, or the useless waste rock can be discarded, which can directly reduce the amount of ore entering the magnetic separation or flotation, save the cost of magnetic separation and flotation, and reduce the treatment level of tailings.

In particular, Mingde Optoelectronics artificial intelligent sorter has been widely used in various ore sorting fields at this stage, not only in wollastonite, but also in ores with visible differences, both in the scope of artificial intelligent sorter. The equipment has withstood the test of various industrial and mining enterprises in terms of technical maturity and practical application effect.