Aluminium hydroxide ultrafine grinding machine


Aluminium hydroxide, Al(OH)3, is found in nature as the mineral gibbsite (also known as hydrargillite) and its three much rarer polymorphs: bayerite, doyleite and nordstrandite. Aluminium hydroxide is amphoteric in nature, i.e, it has both basic and acidic nature. Closely related are aluminium oxide hydroxide, AlO(OH), and aluminium oxide (or alumina), Al2O3. Aluminium oxide is also amphoteric in nature. These compounds together are the major components of the aluminium ore bauxite.

Annual production in 2015 was approximately 170 million tonnes, over 90% of which is converted to aluminium oxide (alumina) that is used in the manufacture of aluminium metal.

The major other uses of aluminium hydroxide is as a feedstock for the manufacture of other aluminium compounds: specialty calcined aluminas, aluminium sulfate, polyaluminium chloride, aluminium chloride, zeolites, sodium aluminate, activated alumina, aluminium nitrate.

Freshly precipitated aluminium hydroxide forms gels, which are the basis for the application of aluminium salts as flocculants in water purification. This gel crystallizes with time. Aluminium hydroxide gels can be dehydrated (e.g. using water-miscible non-aqueous solvents like ethanol) to form an amorphous aluminium hydroxide powder, which is readily soluble in acids. Aluminium hydroxide powder which has been heated to an elevated temperature under carefully controlled conditions is known as activated alumina and is used as a desiccant, as an adsorbent in gas purification, as a Claus catalyst support for water purification, and as an adsorbent for the catalyst during the manufacture of polyethylene by the Sclairtech process.

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Fengli ACM/A series are highly efficient super-fine punch-action mechanical micro grinding machines of performing the complete process of Aluminium hydroxide grinding, separation and making of the finished product within the same tightly integrated system.

1. Built-in separation mechanism-preventing over-grinding.

2. Able to produce uniform granules of required sizes by adjusting the speed of the stage-separation wheel(s) or by adjusting the strength of the blower(s).

3. Powerful blowing and strong self-cooling capability, suitable for grinding heat-sensitive materials.

4. Different grinding accessories/devices are used according to the hardness of the material being ground; different types of materials (alloyed carbon steel, stainless steel, ceramics etc) are available for the Machine's inner linings and product extracting system, meeting the needs of different industries.

5. Both manual and programmable auto-controlled machines available.

The machine is suitable for super-fine grinding of various types of brittle materials. Material hardness (Mohs scale)<4, moisture contents<10%, input size 5-200mm (as decided by the model of the machine and material hardness). The machine is widely used coating materials and other industries.

1. Our design idea is market-oriented and its goal is to increase customers’ satisfaction. Design according to the customers’ special requires. Achieve the perfect combination of rational investment and lower cost.
2.  According to related national standard strictly, we guarantee stable and reliable product quality with superb technique and technology.
3.  Control the production and examination of the parts and the whole machine strictly.
4.  The period of quality guarantee of the equipment is one year, but the whole machine is maintained for whole life. If we receive complaint from customers, we will respond immediately. And if necessary, we will send someone to the field at once.
5.  When technical breakthrough and improvement happen, we will do the correction and upgrade for customers with cost price only if customers will.
6.  Supply the blueprint of the product line and equipment details for free.

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