Kaolin comprehensive utilization technology (6)

(III) Development and production examples

1, Mountain View kaolin beneficiation plant in Suzhou

( 1 ) Raw ore properties

The ore is derived from two mining areas, Yangxi and Yangdong, and is soft and sandy kaolin. The main components of the ore mineral kaolinite, halloysite, montmorillonite followed by, in addition there are small amounts of impurities of quartz, pyrite, and organic matter alunite. The type of ore and its main chemical composition are shown in Table 6 .

Table 6   Ore type and its chemical composition , %

Ore type

SiO 2

Al 2 O 3

Fe 2 O 3

Altered secondary sedimentary

35 ~ 50

20 ~ 40

0.3 ~ 2

Soil type

42 ~ 60

18 ~ 30

1.5 ~ 3.5

Sand type

66 ~ 76

16 ~ 24

0.1 ~ 0.2

 

( 2 ) Process flow and main equipment

Selected by a combination of hydraulic grading, selective flocculation and chemical bleaching. The main equipment is shown in Table 7. The crusher is crushed by a jaw crusher , the double shaft vertical kiln pulp, the hydrocyclone group separates the coarse sand, the leeches separate the fine sand, and the chemical bleach removes the limonite and red. Coloring minerals such as iron ore, product processing using sedimentation tank concentration, filter press filtration, chain plate dryer drying. Depending on the nature of the ore, the machine can produce Patent No. selected from (M 0), number (M 1) 1, number (M 2) 2 and other products, when using elutriation and bleaching operations, produce knife coating grade kaolin.

Table 7    The main process equipment of Guanshan Concentrator

Device name

Specification model

Number of units

use

Jaw crusher

400 × 600mm

1

Crushed mine

Jaw Crusher

250 × 400mm

4

Crushed mine

Self-centering vibrating screen

SZZ 1 -918

1

Screening

Double shaft pulverizer

ZDJ-900

5

Pulping

Hydrocyclone

Φ 200mm

6

Rough selection

Hydrocyclone

606

9

Featured

Hydraulic filter press

YAS-800

twenty one

Dehydration

Chain plate dryer

B-900

4

Concentrate drying

Rotary dryer

Φ 1500 × 12000

1

Raw ore drying

Suspension roller mill

4R-3216

4

Milling

Rotary Tablet Press

Classification of tablet press: Models can be divided into single punch tablet press, rotary tablet press, sub-high speed rotary tablet press, automatic high speed tablet press and rotary core tablet press.

The sheet shape pressed by the tablet press is initially flat circular, and later developed into shallow circular arc and deep circular arc on both sides, which is for the need of coating. With the development of special-shaped tablet press, oval, triangle, oblong, square, diamond, circular ring tablets followed. In addition, with the continuous development of preparations, due to the requirements of compound preparations and timed release preparations, special tablets such as double layer, triple layer and core coating are made, which need to be completed on special tablet press.

Rotary tablet press is a machine which is made of several pairs of die distributed on the turntable to make a circular lifting movement according to a certain track and press the granular material into tablet through the press wheel. And the stamping rod with the rotary table rotating speed ≥60m/min line press is called high-speed rotary tablet press, this high-speed rotary tablet press has a forced feeding mechanism, the machine is controlled by PLC, has the automatic adjustment of pressure, control the weight of the piece, eliminate the waste piece, print data, display fault shutdown and other functions, in addition to the control of the weight difference within a certain range, Quality problems such as missing Angle and loose lobe can be automatically identified and eliminated.

With the development of market demand, the scope of application of tablet press is more and more wide, no longer simply limited to the suppression of Chinese and Western medicine tablets, more widely suppressed health food, veterinary medicine tablets, chemical tablets: such as mothballs, washing blocks, smurf blocks, art powder, pesticide tablets, food tablets: chicken essence block, isatis root block, divine Qu tea block, compressed biscuits.

Rotary Tablet Press,Tablet Press,Tablet Machine,Tablet Maker,Pill Machine

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