大吉山钨矿选矿厂（一）

November 06 13:08:55, 2021

    大吉山钨矿选矿厂是本世纪五十年代建成的，设计能力为2460t/d。
   （1）矿石性质：大吉山钨矿为高温热液裂隙充填石英脉矿床。矿石中主要金属矿物为黑钨矿、白钨矿，其次为辉钼矿、辉铋矿、自然铋、钨华、黄铁矿、磁黄铁矿、黄铜矿及少量孔雀石等；脉石矿物主要为石英、云母、方解石和少量电气石、柘榴子石、绿柱石及金红石等。围岩为变质砂岩。黑钨矿为不均匀嵌布，在石英脉中，大粒晶体达10mm以上，细粒却只有0.04~0.01mm。黑钨矿色褐黑，呈厚板状。矿石中白钨矿一般不多，色灰白，具油脂光泽，粒度一般比黑钨矿细。
    矿石硬度10~12，围岩硬度8~10，矿石密度为2.7~2.8t/m3，松散密度为1.7~1.8t/m3，原矿含泥量为6~7%，含水量为2~5%。
    出窿原矿粒度500~0mm，其多元素分析见下表：

出窿原矿多元素分析

元素名称

WO3

Cu

Bi

Mo

S

Zn

P

MnO

Fe2O3

AL2O3

SiO2

含量，%

0.29

0.01

0.03

0.012

0.32

0.088

0.028

0.25

6.28

9.90

68.06

   （2）工艺流程：选矿厂生产工艺分为三段作业。
    1）破碎和预选：采矿场供矿块度为500~0mm，原矿采用三段一闭路破碎流程。选厂破碎和预选工艺流程见下图：

    2）重选：入选矿石粒度小于8mm，主要选别设备为跳汰与摇床。重选获得重矿物与硫化矿混合的钨粗精矿，供精选段分离和富集。

Automatic Packing Machine

Automatic packaging machine is generally divided into semi-automatic packaging machine and automatic packaging machine. Automatic packaging machine is mainly used for automatic packaging of food, medicine, chemical industry and plant seeds. The material can be granule, tablet, liquid, powder, paste, etc. The automatic packaging machine has the functions of automatic measurement, filling, bag making, sealing, cutting, conveying, printing production batch number, increasing easy incision, warning without material, mixing, etc.

It is mainly suitable for packing instant noodles, ice cream, biscuits, Weihua biscuits, egg yolk pie, egg roll, bread, sausage, seaweed, frozen food, medicine, medicine board, infusion bag (bottle), soap, soap, mosquito repellent incense, paper towel, toilet paper, card, adhesive tape, disposable tableware (knife and fork), etc.

The automatic packaging machine is advanced in design, reasonable in structure and reliable in performance. The automatic packaging machine adopts double synchronous belt pulling film, which is controlled by the cylinder for tension, automatic deviation correction, automatic alarm protection function, and the maximum loss reduction. The measuring device is matched, and it integrates bag making, filling, filling, printing and counting. The metering device can be modified according to the material opening and closing mode.

Basic characteristics

1. Invention patent: a roll of film is automatically cut and translated into two packaging films on the machine, and two lines of articles are automatically packed. One machine has two capacity, small area, and saves people and energy.

2. Touch screen control, simple operation, intuitive display, modular design of electrical appliances, digital control.

3. There are three driving modes: double frequency conversion, double servo and three axis servo. No mechanical transmission, stable and reliable operation, low noise and high tracking accuracy.

4. Material position adjustment: automatic or jog button adjustment.

5. Material conveying width adjustment: one handle can adjust two rows of conveying width at the same time.

7. Two sets of adjustable bags can adjust the height and width of the bag.

8. There is a traction guide wheel in front of the longitudinal heat sealing wheel, and the traction guide angle can be adjusted during operation

Automatic Multi-Head Packing Machine,Automatic Nut Filling Machine,Automatic Powder Package Machine,Automatic Weighting Package Machine

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