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Talc processing plant

Talc processing plant

Zenith Machinery is a professional supplier of talc beneficiation and processing plant. Our products are exported to more than 100 countries around the world. The products include jaw crusher, Raymond mill, and beneficiation plant, etc. We also provide so

Talc beneficiation and processing method 

talc processing plant

Chinese talc ore beneficiation widely used hand-selected, dry-mill air classification. Although individual factories have been established column flotation selection process, it has not been widely used. At present, these processes have already finished their beneficiation research and testing, including optical selection process, bleach, dry or wet magnetic separation, hydrocyclone separation, scrubbing precipitation concentration, centrifugal classification, spray drying, and talcum powder layering process , sterilization and other special processes.

Talc processing not only includes milling operations, but also sorting the low-grade ore by flotation process, meanwhile comprehensive recovery of beneficial associated minerals.

Crushing equipment: Talc is commonly crushed by jaw crusher.

Milling equipment: including general and ultra-fine grinding equipment. General grinding equipment commonly consists of Raymond mill, primarily for the production of 200,325 mesh talc powder; ultra-fine grinding equipment including flat, circular tube, fluidized bed and other jet mill, mainly for the production of the diameter shorter than 5μm ultra-fine talc powder.

The two processes of talc powder production

The first process uses Raymond mill, mainly products 200,325 mesh talc powder, operating capacity: 325 mesh 3.2 ~ 3.8t / h, 200 mesh 4.4 ~ 4.8t / h; the input particle diameter shorter than  40mm; ore grade (SiO content): I grade 57%, II grade 53%, III grade 35%; energy consumption 29 ~ 31kWh / t run-of-mine ore.

The second process is the fine talc ore powder production line, the Zenith Machinery imported the technology from Europe, and the production line consists of four parts: warm-dry, grinding, ultra-fine grinding and air compression system. Main and auxiliary equipment: 250mm × 400mm jaw crusher six sets, SZZ 1 250mm × 2 500mm self-centering vibrating screen six sets, 5R Raymond six sets, GR-180 grinding machine 2 sets (for the jet mill preparation, Zenith production), flat-type jet mill 1 set.

Talc beneficiation practice - Liaoning Haicheng Talc Mine

Haicheng talc mine is in Van Jiabao village Horse Wind town, which is located 24km southeast of Haicheng, was founded in 1949. It has become a talc large enterprise. The annual output talc are 150,000 t of and talc powder processing capacity of 160,000 t.

The ores in this mine are white, gray, pink, etc. And the structures are lump, sheet and middle coarse-grained and disseminated, the main mineral is talc (55%), the associated minerals are magnesite (42%), and quartz (1.5%), the gangue minerals are pyrite (0.5%) and a small amount of apatite, chlorite, serpentine, tourmaline, tremolite, rutile, graphite, etc.

The mine only uses dry-hand selection process currently.  Hand selecting out +100mm I grade out from -350mm, then screening out -30mm II grade from -100mm ore, at last hand selecting out I,III grade from -100+30mm ore. The main technical economic indicators are as follows: capacity of 115kt / a, ore grade of 50%, refined mineral rate of 50%, concentrate grade of 94%, concentrate recoveries rate of 80% and tailings grade of 15%, processing power consumption ore 4.1kWh / t.

Main talc highly-processed products’ kinds and uses

1. Paper making special I,II,III grade talc powder

2. Electric cable I,II grade talc powder
Useing as the padding for cable, rubber and plastic, in order to improve their resistances of acidic and alkali, heat, impact strength, tensile strength and creep, also the thermal conductivity, electrical insulation and to improve the performance of rubber processing.

3. Ceramics I,II grade talc powder
As the ceramics ingredients, it can effectively control the thermal expansion of the ceramic body, as the glaze, it can provide low-cost source of magnesium oxide.

4. Textile special I,II grade talc powder
Talc can be used as the textile padding and brightener for its low wear and high degree of whiteness.

5. Paint and coatings I,II grade talc powder
The talcum powder can easily dispersed in water and organic matter, with high chemical inertness and high oil absorption, it can improve the coating dispersion.

6. Pharmaceuticals I,II grade talc powder
It can be used as cosmetics filler and pharmaceutical and food carriers, additives.

7. Talc carved products
The I grade of industrial raw materials, can be made into workmanship and industrial pencil.

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