Zenith Non-Metallic Mineral Grinding Refined Bauxite Grinding Technology, Craft Premium Processing Solution

CLASSIFICATION OF BAUXITE

Mineral composition
Chemical composition
Application

High-alumina bauxite falls into two main categories: monohydrate-type high-alumina bauxite and trihydrate-type high-alumina bauxite. The monohydrate type is predominantly composed of monohydrate alumina minerals, including diaspore and boehmite (also known as boehmite). The trihydrate type is mainly composed of gibbsite. The high-alumina bauxite produced in the vast majority of producing areas in China belongs to the monohydrate type.

Basic Types	Subtype
Monohydrate-Type High-Alumina Bauxite
	Diaspore-Kaolinite type (D-K type)
	Diaspore-Pyrophyllite type (D-P type)
	Boehmite-Kaolinite type (B-K type)
	Diaspore-Illite type (D-I type)
	Diaspore-Kaolinite-Rutile type (D-K-R type)
Trihydrate-Type High-Alumina Bauxite	Gibbsite type (G type)

Grade	Chemical Composition			Refractoriness	Bulk Density
Grade	Al₂O₃	CaO	Fe₂O₃	Refractoriness	Bulk Density
Special Grade	>85	<0.6	<1.4	>1790	>3.6
Grade 1	>80	<0.6	<1.5	>1790	>3.0
Grade 2A	70-80	<0.8	<1.3-1.7	>1790	>2.8
Grade 2B	60-70	<0.8	<1.3-1.7	>1770	>2.65
Grade 3	50-60	<0.8	<2	>1770	>2.55

01 Metallurgical Grade Bauxite

Mainly used for alumina extraction to produce metallic aluminium.
02 Refractory Grade Bauxite

Used to manufacture various refractory materials, such as refractory bricks and castables.
03 Ceramic Grade Bauxite

Applied as a raw material or additive for ceramic bodies in ceramic production.
04 Abrasive Grade Bauxite

Primarily used for making abrasive tools such as sandpaper and grinding wheels.

RAW BAUXITE AND BAUXITE CLINKER

Content	Raw Bauxite	Bauxite Clinker
Definitions	Bauxite ore mined directly from mines without high-temperature calcination.	The product obtained after high-temperature calcination of raw bauxite.
Hardness	Relatively soft and porous	Higher hardness with dense structure
Appearance	Variable colours including off-white, dark grey, brown, etc., with a relatively rough surface.	Relatively uniform colours, mostly white, light grey, etc., with a comparatively smooth surface after calcination.
Differences in Application	1.It serves as a key raw material for alumina extraction in the alumina industry. 2. It can also be used to make basic refractory materials. However, due to inferior performance compared with bauxite clinker, it is generally applied in scenarios with low refractory performance requirements.	1. It is a key raw material for manufacturing high-grade refractory materials, such as linings for steel ladles and blast furnaces used in steelmaking. 2. It is also used in the abrasive industry; its high hardness makes it suitable as an abrasive material.

DEEP GRINDING PROCESSING OF BAUXITE

As a total solution provider for grinding equipment, Zenith is committed to delivering high-efficiency, energy-saving and eco-friendly grinding machinery and services for customers. With nearly four decades of experience in mill manufacturing, Zenith has developed a full range of grinding mills including the LM Vertical Roller Mill, MTW European Trapezium Mill, LUM Ultra-fine Vertical Roller Mill and XZM Ultra-fine Mill. These models can meet various fineness requirements for bauxite and other materials, featuring stable operation, cost-effective investment and environmentally friendly performance.