Introduction to Dolomite
Bauxite is also known as alumina bauxite, the main component is alumina oxide which is hydrated alumina containing impurities, is an earthy mineral; white or gray, shows in brownish yellow or pink color because of iron contained. Density is 3.9~4g/cm3, hardness 1-3, opaque and brittle; insoluble in water, soluble in sulfuric acid and sodium hydroxide solution.
Application of Bauxite
Bauxite is rich in resources, needed for many industries; therefore, it is a very popular non-metallic material, and the reason why it has been generally welcomed, mainly because it is very promising in the industrial field.
1. Aluminum industry. Bauxite used in national defense, aerospace, automotive, electrical, chemical and other daily necessities industries.
2. Casting. Calcined bauxite is processed into a fine powder for casting after the mould and used in military, aerospace, communications, instrumentation, machinery and medical equipment sectors.
3. For refractory products. High calcined bauxite refractoriness can reach up to 1780°C? chemical stability, good physical properties.
4. Aluminosilicate refractory fibers. With several advantages such as light weight, high temperature resistance, good thermal stability, low thermal conductivity, small heat capacity and resistance to mechanical vibration and so on. Can be used in iron and steel, nonferrous metallurgy, electronics, petroleum, chemical, aerospace, nuclear, national defense and other industries.
5. Raw material of magnesia and bauxite, added with appropriate binder, can be used for casting overall cylinder liner of molten steel ladle with very good results.
6.The manufacture of bauxite cement, abrasive materials, various compounds can be made of aluminum bauxite in ceramic industry and the chemical industry.
Bauxite Grinding process
Component analysis of bauxite raw materials
|
Al2O3、SiO2、Fe2O3、TiO2、H2O＋as the main component |
S、CaO、MgO、K2O、Na2O、CO2、MnO2 |
Ga、Ge、Nb、Ta、TR、Co、Zr、V、P、Cr、Ni etc |
|
>95% |
Minor component |
Trace elements |
Bauxite powder making machine model selection program
|
Specification |
Fine powder processing（80-400mesh） |
Ultrafine powder deep processing（600-2000mesh） |
|
Equipment selection program |
Vertical grinding mill and raymond grinding mill |
|
*Note: select the main machine 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 Bauxite 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
The large Bauxite material is crushed by the crusher to the feed fineness (15mm-50mm) that can enter the pulverizer.
Stage II: Grinding
The crushed Bauxite 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 bauxite powder processing
Equipment model and number: 1 set of HLM2400
Processing raw material: Bauxite
Fineness of finished product: 325 mesh D97
Capacity: 8-10t / h
Guilin Hongcheng has strong strength and solid foundation in the field of grinding machine production. It is an expert in the field of grinding machine R & D and manufacturing. Through repeated comparison and market research, our company resolutely chose Hongcheng bauxite mill (HLM2400 vertical roller mill). The bauxite mill produced by Guilin Hongcheng has high quality, stable performance and good quality, which can meet the production demand in the field of bauxite pulverization. More importantly, Hongcheng has a strong professional technology, The high-quality after-sales maintenance engineer team has assisted our factory in debugging and installing equipment for many times during the supply period, making great contributions to the formal operation of bauxite grinding mill.
Post time: Oct-22-2021
