Introduction to barite
Barite is a non-metallic mineral product with barium sulfate (BaSO4) as the main component, pure barite was white, shiny, also often has gray, light red, light yellow and other color due to impurities and other mixture, good crystallization barite appears as transparent crystals. China is rich in barite resources, 26 provinces, municipalities and autonomous regions are all distributed, mainly lies in south of China, Guizhou province accounted for one-third of the country's total reserves, Hunan, Guangxi, respectively, ranking second and third. China's barite resources not only in large reserves but also with high grade, our barite deposits can be divided into four types, namely sedimentary deposits, volcanic sedimentary deposits, hydrothermal deposits and eluvial deposits. Barite is chemically stable, insoluble in water and hydrochloric acid, non-magnetic and toxicity; it can absorb X- rays and gamma rays.
Application of barite
Barite is a very important non-metallic mineral raw material, with a wide range of industrial uses.
(I) drilling mud weighting agent: Barite powder added into mud when oil well and gas well drilling can effective increase the mud weight, is most commonly used measure in drilling operations to effectively prevent blowout frequent initiatives.
(II) Lithopone Pigment: Using a reducing agent can reduced Barium sulfate to barium sulfide (BaS) after the barium sulfate was heated, then a mixture of barium sulfate and zinc sulfide (BaSO4 accounted for 70%, ZnS accounted for 30 %)obtained which is lithopone pigments after react with the zinc sulfate (ZnSO4). It can be used as paint, paints raw material, is a commonly used high-quality white pigment.
(III) various barium compounds: the raw material can be manufactured barite barium oxide, barium carbonate, barium chloride, barium nitrate, precipitated barium sulfate, barium hydroxide and other chemical raw materials.
(IV) Used for industrial fillers: In paint industry, barite powder filler can increase the film thickness, strength and durability. In the paper, rubber, plastic field, barite material can improve the hardness of rubber and plastic, wear resistance and aging resistance; Lithopone pigments are also used in the manufacture of white paint, more advantages for indoor use than magnesium white and lead white.
(V) Mineralizing agent for cement industry: the adding of barite, fluorite compound mineralizer in the use of cement production can promote the formation and activation of C3S, clinker quality has been improved.
(VI) Anti-rays cement, mortar and concrete: the use of barite having an X-ray absorption properties, making Barium cement, barite mortar and Barite Concrete by barite, can replace metal grid for shielding nuclear reactor and build research, hospital etc buildings of X-ray proof.
(VII) Road construction: rubber and asphalt mixture containing about 10% barite has been successfully used for parking lot, is a durable paving material.
(VIII) Other: reconciliation of barite and oil applied to the cloth manufacturing linoleum; barite powder used for refined kerosene; as digestive tract contrast agent used in the pharmaceutical industry; also can be made as pesticides, leather, and fireworks. In addition, barite is also used to extract metals barium, used as getter and binder in television and other vacuum tube. Barium and other metals (aluminum, magnesium, lead, and cadmium) can be made as alloy for the manufacture of bearings.
Barite grinding process
Component analysis of barite raw materials
|
BaO |
SO3 |
|
65.7% |
34.3% |
Barite powder making machine model selection program
|
Product specifications |
200 mesh |
325 mesh |
600-2500mesh |
|
Selection program |
Raymond mill, Vertical mill |
Ultrafine vertical mill, Ultrafine mill, Airflow mill |
|
*Note: select different types of hosts according to the output and fineness requirements.
Analysis on grinding mill models
1.Raymond Mill, HC series pendulum grinding mill: low investment costs, high capacity, low energy consumption, equipment stability, low noise; is the ideal equipment for barite powder processing. But the degree of large-scale is relatively lower compared to vertical grinding mill.
2. HLM vertical mill: large-scale equipment, high capacity, to meet the large-scale production demand. Product has high degree of spherical, better quality, but the investment cost is higher.
3. HCH ultrafine grinding roller mill: ultrafine grinding roller mill is efficient, energy-saving, economical and practical milling equipment for ultrafine powder over 600 meshes.
4.HLMX ultra-fine vertical mill: especially for large-scale production capacity ultrafine powder over 600 meshes, or customer who has higher requirements on powder particle form, HLMX ultrafine vertical mill is the best choice.
Stage I: Crushing of raw materials
Barite bulk materials are crushed by the crusher to the feed fineness (15mm-50mm) that can enter the grinding mill.
Stage II: Grinding
The crushed barite small materials are sent to the storage hopper by the elevator, and then sent to the grinding chamber of the mill evenly and quantitatively by the feeder for grinding.
Stage III: Classifying
The milled materials are graded by the grading system, and the unqualified powder is graded by the classifier and returned to the main machine for re grinding.
Stage V: Collection of finished products
The powder conforming to the fineness flows through the pipeline with the gas and enters the dust collector for separation and collection. The collected finished powder is sent to the finished product silo by the conveying device through the discharge port, and then packaged by the powder tanker or automatic packer.
Application examples of barite powder processing
Barite grinding mill: vertical mill, Raymond mill, ultra-fine mill
Processing material: Barite
Fineness: 325 mesh D97
Capacity: 8-10t / h
Equipment configuration: 1 set of HC1300
The output of HC1300 is almost 2 tons higher than that of the traditional 5R machine, and the energy consumption is low. The whole system is fully automatic. Workers only need to operate in the central control room. The operation is simple and saves labor cost. If the operating cost is low, the products will be competitive. Moreover, all the design, installation guidance and commissioning of the whole project are free, and we are very satisfied.
Post time: Oct-22-2021
