Boehmite

Boehmite

Boehmite or böhmite is an aluminium oxide hydroxide (γ-AlO(OH)) mineral, a component of the aluminium ore bauxite. It is dimorphous with diaspore.It is white with tints of yellow, green, brown or red due to impurities. It has a vitreous to pearly luster, a Mohs hardness of 3 to 3.5 and a...

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Boehmite or böhmite  is an aluminium oxide hydroxide (γ-AlO(OH)) mineral, a component of the aluminium ore bauxite. It is dimorphous with diaspore.It is white with tints of  yellow, green, brown or red due to impurities. It has a vitreous to pearly  luster, a Mohs hardness of 3 to 3.5 and a specific gravity of 3.00 to 3.07. It  is colorless in thin section, optically biaxial positive with refractive indices  of nα = 1.644 – 1.648, nβ = 1.654 – 1.657 and nγ = 1.661 – 1.668.

Boehmite occurs in tropical laterites and bauxites developed on  alumino-silicate bedrock. It also occurs as a hydrothermal alteration product  of corundum and nepheline. It occurs with kaolinite, gibbsite and diaspore in  bauxite deposits; and with nepheline, gibbsite, diaspore, natrolite and  analcime in nepheline pegmatites.[3] Industrially, it is used as an inexpensive  flame retardant additive for fire-safe polymers.
 We could manufacture and adjust boehmite as your required data.


The specification of  boehmite:

Items No.

boehmite Content(≥%)

D50
     (μm)

(≤ppm)

Na

Si

Fe

Ca

Mg

Cu

Cr

Ti

XR-BR01

99.9

80

300

100

100

200

20

10

10

10

XR-BR02

99.95

50

100

50

50

100

10

5

5

5

XR-BR03

99.99

40-60

50

25

3

3

1

1

1

1

Item No.

Chemical Composition %

D50, um

Surface area m2/g

Bulk density g/cm3

Fe2O3

Na2O

H2O

Ignition

B-R-2

≤0.02

≤0.03

≤0.5

≤17

2.0±0.5

≥70

0.3-0.5

Item

Unit

Low sodium    Pseudoboehmite

Common    Pseudoboehmite

Macroporous    pseudo boehmite

XR-DF-03-LS(NH-P-DF)

NH-P-D

NH-P-DH

NH-P-DF-1

NH-P-DF-2

NH-P-DF-3

Fe2O3      

%   

≤0.01  

≤0.01

≤0.03

≤0.03

≤0.03

≤0.03

Na2O      

%   

≤0.1

≤0.30

≤0.3

≤0.1

≤0.1

≤0.1

SiO2  

≤0.2  

≤0.2  

≤0.2  

1.0-2.0

1.0-2.0

1.0-2.0

Particle size

um

3-20

3-20

3-20

3-20

3-20

3-20

Surface area

㎡/g

≥250

≥250

≥250

≥250

≥250

≥250

Pore Volume

ml/g

0.4-0.5

0.4-0.5

0.5-0.8

0.85-0.95

0.9-1.0

0.9-1.2

Dry basis

%

≥65

≥65

≥65

≥70

≥70

≥70

3 H2O

%

≤1

≤1

 

≤3

≤3

≤3

Peptizing index

%

≥97

≥97

≥70

——


Item

Chemical Composition,%

Physical Property

SiO2

Fe2O3

Na2O

LOI

3.H2O

Pore volume

Surface area

Bulk density

ml/g m2/gg/ml

NH-P-DF-1

1.0~2.0

0.03

0.1

24

≤3

0.85-0.95

280

NH-P-DF-2-

1.0~2.0

0.03

0.1

24

≤3

0.9-1.0

300

NH-P-DF-3

1.0~2.0

0.03

0.1

24

≤3

0.9-1.2

320

DH-QP-DFH-3

0.2

0.04

0.1

24

≤3

0.9~1.2

280

DH-QP-DFH-2

0.2

0.04

0.1

24

≤3

0.7~0.9

250

DC-P-DF-1

0.2

0.04

0.1

24

≤3

0.5~0.7

250


Application of boehmite:
 Boehmite is widely applied in the catalyst carrier, flame retardants,  electronic ceramic substrate, etc

Storage of boehmite
 lAvoid moisture, avoid scrolling, throw and sharp shocking during  transportation, rainproof facilities should be readied..
 lIt should be stored in dry and ventilated warehouse to prevent  contamination or moisture.

Package of boehmite

Type

Plastic bag

Super sack/Jumbo bag

Powder

25kg/55lb

1000kg/ 2200 lb

XiangRun is a specialized aluminium hydroxide dry gel(Pseudo-boehmite) and boehmite manufacturer located in China. Our company  is ISO9001:2000 approved due to its management in line with international  standards. With several years production experience in the chemical industry,  we are happy to be able to produce quality sulfur recovery catalyst,  adsorbent,catalyst carrier, zeolite and related products for customers all over  the globe. We offer complete service, in addition to reliable products, for  customers so that they can feel secure in their purchase. If you are interested  in our aluminium hydroxide dry gel(Pseudo-boehmite) , or other chemical products, please contact us via phone  or email.


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FAQ
 Q: Is boehmite same as pseudoboehmite or  pseudo boehmite?
 A: They are not same.
 Q: What packages of boehmite'?
 40kg/pack, 25kg/pack or 1000kg/pack. We  could do the pack as your requirement.

 


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