Attapulgite
The attapulgite clay is a clay mineral consisting mainly of attapulgite. The attapulgite is a kind of crystalloid hydrous magnesium-aluminum silicate mineral having a special laminated chain structure in which there is a crystalline lattice displacement existed. Thus it makes the crystals contain uncertain quantities of Na+, Ca+, Fe3+ and Al, and present in the shape of needles, fibers or fibrous clusters. The attapulgite has very good colloidal properties such as: specific features in dispersion, high temperature endurance, salt and alkali resistance, and also high adsorbing and de-coloring capabilities. Furthermore, it has certain plastic and adhesive characters. Its ideal molecular formula is Mg5Si8O20 (OH)2 (OH2)4 · 4H2O. The structure is somewhat between laminated and chain structure. The attapulgite looks like soil, and compact blocks which are found in the sedimentary rocks and the weathering crust. The minerals are white, hoar, caesious or celadon, or with some dim mercerization in color. The clay is fine and a bit greasy smooth, light in weight, crispy, and the fractured surface is like shells or in irregular shapes. The attapulgite has strong ability to absorb water. When it is wet, it shows plastic and adhesive properties; and when it gets dry, it dose not shrink much and does not show cracks. When it is soaked in water, it collapses. The soliquoid, when it contacts with electrolytes, does not become flocculence and precipitates.
1. Main oxides contents in the attapulgite clay:
|
Oxides
|
SiO2
|
Al2O3
|
Fe2O3
|
Na2O
|
K2O
|
CaO
|
MgO
|
MnO
|
TiO2
|
Ig. loss
|
|
Content
|
55.6-60.5
|
9.0-10.1
|
5.7-6.7
|
0.03-0.11
|
0.96-1.30
|
0.42-1.95
|
10.7-11.35
|
0.61
|
0.32-0.63
|
10.53-11.80
|
2. Spectral analysis results on the trace-elements in the attapulgite clay:
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Elements
|
Cu
|
Pb
|
Zn
|
Cr
|
No
|
Bi
|
W
|
Sn
|
Ca
|
Ge
|
|
Contents
|
35-50
|
≤10
|
40-60
|
30-60
|
＜1
|
＜10
|
＜30
|
＜10
|
＜5
|
＜5
|
|
Elements
|
Ag
|
V
|
Co
|
Cd
|
As
|
Be
|
Sb
|
Ni
|
Ti
|
Mn
|
|
Contents
|
＜0.5
|
60-100
|
＜10
|
＜30
|
＜100
|
＜1
|
＜30
|
20-30
|
2500-3500
|
400-700
|
3. The hygienic specifications of the attapulgite clay: mg/kg
As ≤ 0.5 Pb ≤ 1 Hg ≤ 0.3
4. Physical analysis results of the attapulgite:
|
Items
|
Colloid value (ml/15g clay)
|
Expansion volume
(ml/g clay)
|
Blue absorption methylene blue g/100g clay
|
Specific surface area (m2/g clay)
|
Total cation exchange quantity
(mg equivalent
/100g clay )
|
Decoloring capacity
(After being activated )
|
|
Result
|
55-65
|
4-6
|
≤24
|
400-500
|
25-50
|
＞170
|
|
|
|
|
|
|
|
|
5. Toxicological test result of the attapulgite:
Both the Nanjing Municipal Sanitation and Antiepidemic Station and the Nanjing Municipal Foodstuff Research Institute have carried out “The Comprehensive Sanitation and Safety Assessment on the Attapulgite Clay, a Natural Foodstuff Processing adjuvant”. Their test results are as follows:
(1). Such heavy metals as arsenic, lead and mercury are not detectable in the attapulgite clay product, while total iron, sulfates, chlorides, nitrites, etc. are within the limits called for by the standards for processing adjuvant concerned.
(2). The tests on the content of the natural radioactive nuclide 238V, 232TH, 226Ra, 40K, and the natural g radiation dosage at the surface of the mining area show that in the original ore and in the product those figures are lower than that in the natural background value, therefore they are within the normal range. The Ames test reveals negative results and there is no positive reaction on the micro nucleir incidence rate of the polychromatic erythrocytes in the bone marrow chromosome of mice. The max. inaction dosage to animals is 9,909.01mg/kg, showing that the test material is very safe to health.
1st Hydrous magnesium-based silicate decolorizing clay
The raw material of this product is the complex clay, a rare nonmetal mineral resource of China and it is made through special technology. It appears as hoar powder, insoluble in water, oil or organic solvents. It is characterized by its high de-coloring rate, fast filtering speed and low residual oil.
This product can reduce the production cost of the oil producers to a great extent. The dosage can be lowered by 5% as compared with other similar products. The filtering speed is fast, thus the residual oil in the filtering cake can be reduced. It is a good substitute for activated carbon and activated white clay. It is a new de-coloring product which is good in performance and low in price.
Product applications:
1. It is a special product to remove coloring matters, phosphatides, colloid, soaps, etc. fromoilo. The oils, after being de-colored, is clear and transparent, and stable in quality.
2. It has a specific adsorption prokerty to adsorb 100% of the potent carcinogens aflatoxins such as: B1 (AFTB1) and 3,4— benzopyrene from various kinds of vegetable oil, thus the hygienic safety requirement of the edible oil can be met.
3. Purity treatment of water for improvement of quality and wastewater treatment
2nd Characteristics of the product:
1. This product has a wide range of decolorizing and adsorbing functions and purifying capabilities, and it is very stable during application. It has strong adsorption towards coloring matters and impurities, and its de-coloring rate for various coloring matters in vegetable oils is over 95%.
2. It’s simple and convenient to use the product, and it’s not necessary to change the original production process of the oil & grease producers. The decolorizing oil is featured with low acid number which will not rise again, therefore, the dehydration process can be deleted.
3. The filtered cakes containing small amount of vegetable oil and animal fat can be re-utilized, thus the environment will not be polluted.
Operation conditions
Decolorizing temperature: 115~120oC
Decolorizing time: 20~30min
Product indices
Decolorizing rate: 85~90%
Decolorizing power: >150
Moisture: <5%
Particle size: 150 mesh, 200 mesh and 325 mesh (or as per customer’s requirement)
Sanitary index Such heavy metals as arsenic, lead, mercury, etc. are not detected.
Packing (knitted PP lined with plastic)
25kg/bag, 250kg/bag, 500kg/bag and 800kg/bag
3rd Attapulgite clay powder of good quality
The said product is processed with attapulgite clay of good quality after its dressing, drying and grinding. This product features stable chemical properties, strong cohesion and good adsorptivity. And it can be used in the feedstuff, chemical industry, fertilizer and medical applications.
1. Cohesive agent for aquatic product feedstuff
The said product features strong cohesion, low specific gravity and contains all kinds of necessary trace elements, and it can be applied to the aquatic feedstuff so as to extend the dispersion duration of feedstuff particles in water and to supply necessary trace elements to the animals. And it can adsorb the internal harmful organisms of the animals as well, thus to reduce the disease incidence.
2. Decolorant of chemical products
It can be used as the decolorant of polyether, foaming agent, glycerol, glucose and starch syrup, thus to cut down the cost of the products.
3. Poultry padding
It can absorb moisture and remove bad odor so as to improve the environment inside the feedlot.
4. Cohesive agent for compound fertilizer
Granular fertilizer made of this product is not likely to form cakes, and has high granulation rate with smooth surface and good nitrogen fixation ability. The said fertilizer can improve the soil and is favorable for the growth of plant.
5. Water decontaminant
It can be used for wastewater treatment in the fields of chemical industry, medication, oil refining, etc., particularly for the treatment of nitrogen containing wastewater due to its superiority over the activated carbon.
Technical specifications
|
Item
|
Particle size (200mesh odd)
|
Moisture
|
Arsenic (as As)
|
Lead (as Pb)
|
Mercury (as Hg)
|
|
Index
|
≤5%
|
15%
|
Not
|
Not
|
Not
|
Packing material and specifications
Braided bags, paper-and-plastic bags and paper bags
Specifications (as per bag):
25kg, 40kg, 500kg and 800kg
4th Salt resistant clay
This product is customized as drilling mud based on good quality attapulgite clay. And it is applicable to geological drilling, marine drilling and geological drilling in salt containing area. It features good thermal stability and salt resistant property, therefore, the number of rejected wells will be small while using it to protect the wall of wells, and the drilling efficiency is improved and the cost is cut down as well.
Production performance and its application
1. This product features good colloidal and suspending properties, and is suitable to be used as drilling mud under various geological conditions.
2. Because of good thermal stability, it shows no flocculation or dilution under high temperature, therefore, it is applicable to deep drilling and terrestrial heat drilling.
3. Its salt resistant ability makes it free from being affected by electrolytes, thus it can still be in mud form even in saturated brine. It is appropriate for marine and salty stratum drilling.
Technical specifications (conform with GB5005-2002)
|
Description
|
First grade
|
|
600revolution reading
|
≥30scale
|
|
Residue on sieve
|
200mesh≤8%
|
|
Moisture
|
≤15%
|
Preparation of product
Add water to the product and stir the mixture in a homogenizer for 20 minutes. Then put in synergist and dehydration-weakening agent, etc. to prepare the required mud.
Packing material and specifications
Braided bags, paper-and-plastic bags and paper bags
Specifications (as per bag):
25kg, 40kg, 500kg and 800kg
5th Attapulgite Clay Powder of High Viscosity
It is a special formulated and customized product with high viscosity based on the natural nonmetal mineral – the attapulgite clay. The said product integrates such advantages as salt-resistance, adsorption and cohesion, and it can be used as the adhesive agent, binder, thickener, etc. of mineral wool acoustic panel, molecular sieve, thermal insulating material, painting, foundry coating, insulating glass desiccant, etc., as well as the catalyst carrier and the suspending agent of liquid fertilizer.
Product performance and its application
1. This product is characterized with strong adsorption and cohesion forces, and has good suspending and colloidal properties. It can be made into mineral wool acoustic panel (e.g. ceiling) together with other fibers, which integrates such functions as decoration, sound absorption, thermal insulation, fire prevention, energy conservation, disinfection and air cleaning.
2. It will not react with the molecular sieve due to its inertia in the operative media, therefore, it is used as the binding agent of the molecular sieve, and can decrease the abrasion and wearing of the sieve, enhance the sieve strength, improve the appearance and quality.
3. The product has such advantages as having high water absorption, good thermal and sound insulation, adhesive value and adsorbability. Therefore, it can be used as the binder and bulking filler of the insulating glass desiccant and other desiccants.
4. It can be used as the carrier of catalyst or the suspending agent of liquid fertilizer/pesticide due to its light specific gravity, strong suspending ability and adsorbability.
5. It features special physical-chemical properties, and has perfect chemical stability required by printing and dyeing and intertexture applications. It shows no flocculation, dilution, mold generation degradation or fermentation under high temperature. Besides, it has certain viscosity and thixotropy and makes it inactive to electrolytes and easy to be washed. Therefore, it is a perfect material in printing and dyeing and intertexture industries, and it helps to decrease the COD (chemical oxygen demand) drastically in the generated wastewater.
Technicalspecifications(conformwithQ/320830DC001-2004)
|
Model
Item
|
GEL-1
|
GEL-2
|
GEL-3
|
|
Disperse viscosity (mPa.S)
|
≥3000
|
≥2500
|
≥2200
|
|
Residue on wet sieve (200mesh)
|
≤5%
|
≤5%
|
≤5%
|
|
Moisture(%)
|
≤15
|
≤15
|
≤15
|
|
pH value
|
8-10
|
8-10
|
8-10
|
|
Bulk density
|
0.54-0.6
|
0.54-0.6
|
0.54-0.6
|
Content (%) of main oxides:
SiO2:50.4--61.3 Al2O3:9.4--9.8
MgO:9.3--10.5 CaO:1.8--2.5
Fe2O3:2.3--2.9 Na2O:0.3--0.5 K2O:1.0--1.6
TiO2:0.2--0.6 MnO:0.04--0.08 Loss on ignition:13.8--16.4
Packing material and specifications
Braided bags, paper-and-plastic bags, paper bags and water soluble paper bags
Specifications (as per bag):
25kg, 500kg and 800kg
6th GEL-40
GEL 40 by using the rare non-metal minerial materrial in China-attapulgite clay, the company had developed a new product, special thickener for coatings.
GEL 40 has excellent colloidal and rheometric property. It can be used as a thickener and stabilizer in water based, alcohol based or other solvents based dispersion systems. It can be used along or together with other thickeners.
Typical applications
1. Latex coatings for construction
2. Trasportation coatings
3. Sealing agents, filler
4. Water based bonding agent
5. GFRP application
6. Bonding agent for cast coating
Typical properties
Moisture: min 12%
Average D: 4 micron
Viscosity: 1800~2800
PH: 8.5
Density: 2.47
+325mesh: 0.1%
SEVEN、GEL-50
GEL 50 by using the rare non-metal minerial materrial in China-attapulgite clay, the company had developed a new product, special thickener for coatings.
GEL 50 has excellent colloidal and rheometric property. It can be used as a thickener and stabilizer in water based, alcohol based or other solvents based dispersion systems. It can be used along or together with other thickeners.
Typical applications
1. Latex coatings for construction
2. Trasportation coatings
3. Sealing agents, filler
4. Water based bonding agent
5. GFRP application
6. Bonding agent for cast coating
Typical properties
Moisture: min 12%
Average D: 4 micron
Viscosity: 1800~2800
PH: 8.5
Density: 2.47
+325mesh: 0.05%