Introduction to bentonite
Bentonite also known as clay rock, albedle, sweet soil, bentonite, clay, white mud, vulgar name is Guanyin soil. Montmorillonite is the main component of the clay minerals, its chemical composition is quite stable, known as "universal stone." Montmorillonite is a two-layer co-connected silicon oxide tetrahedron film laminated layer of common aluminum (magnesium) oxygen (hydrogen) octahedral sheet, constitute 2: 1 type of crystal water containing silicate minerals. It is one of the most powerful minerals in the clay mineral family. Montmorillonite is a mineral belonging to the montmorillonite family, and a total of 11 montmorillonite minerals are found. They are slippery bentonite, bead, lithium bentonite, sodium bentonite, bentonite, zinc Bentonite, sesame soil, montmorillonite, chrome montmorillonite and copper montmorillonite, but from the internal structure can be divided into montmorillonite (octahedral) and the Benton subfamily (38 Surface). Montmorillonite is one of the typical layered silicate minerals, unlike other layered silicate minerals; the gap between the layers is particularly large, so that the layers and layers contain an amount of water Molecules and exchangeable cations. The results of slow scanning by diffractometer shows that the particle size of montmorillonite is close to nanometer scale and is a natural nanomaterial.
Application of Bentonite
Purified lithium bentonite:
Mainly applied in foundry coating and color ceramic coating, also applied in emulsion paint and fabric sizing agent.
Purified sodium bentonite:
1.Applied as foundry molding sand and binder in machinery industry to increase casting accuracy;
2.Applied as filler in paper-making industry to increase product brightness;
3.Applied in white emulsion, floor glue and paste producing for high adhesive property;
4.Applied in water-based paint for steady suspension property and consistence.
5.Applied for drilling fluid.
Cement bentonite:
Applied in cement processing, bentonite can increase product appearance and performance.
Efficient activated clay:
1.Used for animal and vegetable oil refining, able to remove harmful composition in edible oil;
2.Used for petroleum and mineral refining and purifying;
3.In food industry, used as clarifying agent of wine, beer and juice;
4.Applied as catalyst, filler, drying agent, adsorbent and flocculating agent in chemical industry;
5.Can be applied as chemical defense antidote in national defense and chemical industry. Along with the development of society and science, activated clay will have a wider application.
Calcium bentonite:
Can be applied as foundry molding sand, binder and radioactive waste absorbent;
Also can be used as thinner and pesticide in agriculture.
Bentonite Grinding process
Bentonite powder making machine model selection program
|
Product fineness |
200 mesh D95 |
250 mesh D90 |
325 mesh D90 |
|
Model selection scheme |
HC Series Large-scale Bentonite Grinding Mill |
||
*Note: select the main machine according to the output and fineness requirements
Analysis of various mills
|
Equipment name |
1 HC 1700 vertical pendulum mill |
3 sets of 5R4119 pendulum mill |
|
Product granularity range (mesh) |
80-600 |
100-400 |
|
Output (T / h) |
9-11 (1 set) |
9-11 (3 sets) |
|
Floor area (M2) |
About 150 (1 set) |
About 240 (3 sets) |
|
Total installed power of the system (kw) |
364 (1 set) |
483 (3 sets) |
|
Product collection method |
Full pulse collection |
Cyclone + bag collection |
|
Drying capacity |
high |
in |
|
Noise (DB) |
eighty |
ninety-two |
|
Workshop dust concentration |
< 50mg/m3 |
> 100mg/m3 |
|
Product power consumption (kW. H / T) |
36.4 (250 mesh) |
48.3 (250 mesh) |
|
Maintenance quantity of system equipment |
low |
high |
|
Slagging |
yes |
nothing |
|
environment protection |
good |
difference |
HC 1700 vertical pendulum mill:
5R4119 pendulum mill:
Stage I: Crushing of raw materials
The bulk bentonite material is crushed by the crusher to the feed fineness (15mm-50mm) that can enter the pulverizer.
Stage II: Grinding
The crushed bentonite 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 bentonite powder processing
Processing material: bentonite
Fineness: 325 mesh D90
Capacity: 8-10t / h
Equipment configuration: 1 HC1300
For the production of powder with the same specification, the output of hc1300 is almost 2 tons higher than that of the traditional 5R machine, and the energy consumption is low. The whole system is fully automatic. Workers only need to operate in the central control room. The operation is simple and saves labor cost. If the operating cost is low, the products will be competitive. Moreover, all the design, installation guidance and commissioning of the whole project are free, and we are very satisfied.
Post time: Oct-22-2021
