CGT-8振動式砂金(jin)精(jing)選(xuan)機(ji)(ji)是國內有關砂金(jin)精(jing)選(xuan)機(ji)(ji)的基礎(chu)上設(she)計的。經多年采生產實踐，該精(jing)選(xuan)機(ji)(ji)具有機(ji)(ji)械參數(shu)良好、操作(zuo)簡單、砂金(jin)回收率高等優點。

一、  用途及精選原理

每處理    1m³精砂，只需30分(fen)鐘左右，且回(hui)收率(lv)可達(da)98%，如此進(jin)行二次處(chu)理，回(hui)收率(lv)可達(da)99.8%，粒(li)徑在    0.02毫米的微粒(li)金可全(quan)部回(hui)收。

該機還可以上人工小溜,每小時可處理    3m³，處理(li)精(jing)砂可(ke)得到滿(man)意(yi)的經濟效益。

砂(sha)(sha)金(jin)、砂(sha)(sha)礫(li)和水三種物(wu)質的(de)比(bi)重(zhong)差異明顯(xian)，砂(sha)(sha)金(jin)比(bi)重(zhong)為16左右，砂(sha)(sha)礫(li)為2.6，水為1。該(gai)精選機是根據(ju)它們比(bi)重(zhong)不(bu)同，采(cai)用(yong)震動(dong)浮原理，在震動(dong)作用(yong)下，砂(sha)(sha)礫(li)在槽(cao)內(nei)(nei)進行往復跳動(dong)，相互碰撞，加水在槽(cao)內(nei)(nei)產生渦流(liu)作用(yong)，使砂(sha)(sha)礫(li)產生半懸浮狀態(tai)，結果砂(sha)(sha)礫(li)向槽(cao)下運動(dong)，逐(zhu)漸流(liu)出槽(cao)外，而砂(sha)(sha)金(jin)富集在槽(cao)內(nei)(nei)，這樣就(jiu)把砂(sha)(sha)金(jin)和砂(sha)(sha)礫(li)截然分開。

二、  結構說明

以輕型鋼軌(gui)為滑輪(lun)基礎(chu)平面，配有(you)(you)4個支(zhi)承輪(lun)滑動(dong)，支(zhi)承輪(lun)托支(zhi)溜槽(cao)(cao)，槽(cao)(cao)內底面鋪有(you)(you)塑料毛氈(zhan)，并有(you)(you)聯(lian)鎖溜槽(cao)(cao)壓緊，溜槽(cao)(cao)頭(tou)部(bu)安(an)有(you)(you)擺線針(zhen)輪(lun)減速機帶動(dong)凸(tu)輪(lun)，推動(dong)倒向桿(gan)，由壓縮彈簧回，形成震動(dong)。

三、  主要技術參數

四、安裝及使用

1、根(gen)據現場實(shi)際情況，確(que)定安裝位置(zhi)，一般在選礦溜槽(cao)附(fu)近，或設在清水位置(zhi)。

2、將精選機安裝位置墊(dian)平壓實，然后將精選機穩好(hao)，縱向坡度調到(dao)10.5°—12°，橫(heng)向要(yao)求水平。

3、將(jiang)精選(xuan)機底(di)部用砂礫(li)壓(ya)好，防(fang)止精選(xuan)機跳(tiao)動。

4、調整好噴水管(guan)，應直接噴射上料槽內，開(kai)動(dong)機器工(gong)作。

5、不斷(duan)把精(jing)砂(sha)上到精(jing)選(xuan)機上料槽(cao)內，由于水的沖擊，精(jing)砂(sha)自(zi)動流入精(jing)選(xuan)機槽(cao)內，大約(yue)30分鐘即可(ke)上完。

6、待(dai)料上完后，用(yong)水沖擊(ji)和(he)震動1—2分鐘，再清(qing)理。

7、清(qing)溜，砂金基本在上料槽內和精(jing)選機前部、中部，尾(wei)部基本無金。

8、清溜(liu)時(shi)(shi)，為(wei)減少淘(tao)洗量，可用網眼8×    8毫米(mi)的鐵(tie)絲編織的篩(shai)子(zi)過(guo)一下，除(chu)掉(diao)較(jiao)大礫石，再(zai)進行入工淘(tao)洗。在過(guo)篩(shai)時(shi)(shi)，要(yao)特(te)別注意檢查有(you)無塊金存在。

9、當(dang)細(xi)粒金較多(duo)時，可進行二次精選，以便保(bao)證回收率。

10、溜格通(tong)水孔若被礫石(shi)堵塞，要及時(shi)處理(li)掉,以保暢(chang)通(tong)。

11、精選機不使用時，不得放任何(he)物品(pin)，以保障(zhang)使用期限(xian)。

12、請注(zhu)意：水量大(da)時角度(du)可(ke)小點；水量小時角度(du)可(ke)大(da)點，使其毛(mao)氈保(bao)持(chi)不露為宜。

CGT-8 Vibrating Placer Gold Separator is a CGLC60A  Model and CGLC    40A Model  combined placer gold processing chute or can be operated along with other  equipment. It is designed based upon the relevant placer gold separators in    China,  with years of production practices showing good mechanical performance, simple  operation, high recovery of placer gold and other advantages.

I. Use and separation  philosophy

Placer gold is subject to primary separation by  CGLC60A Model and CGLC    40A  Model combined placer gold separation chute or other chutes with    0.7m³ of concentrate obtained. It  requires more treatment prior to obtaining higher graded concentrate. This  process used to be handled manually through chute, followed by hand washing,  which took 3-4 hours with high labor intensity and low recovery rate of placer  gold, especially, in the case of more fine grains of gold and platelet gold,  much lower in the recovery. However, CGT-8 Vibrating Placer Gold Separator has  solved the above-mentioned problem with handling of    1m³ of concentrate requiring only about 30  minutes and the recovery rate of 98% reached. In the event that secondary  treatment takes place, the recovery rate is expected to reach 99.8% and the  particles at a size of    0.02 mm  can be fully recovered.

This machine also can be used for handling manually  through chute at a capacity of    3m³/h  with treatment of concentrate producing the desirable economic benefit.

The  three substances of placer gold, gravel and water have an evident difference in  specific gravity with the specific gravity for placer gold being around 16, gravel  2.6 and water 1. The separator introduces the principle of floating by  vibration based on their different specific gravities. The gravels, under the  action of vibration, will jump back and forth and collide each other in the  chute. With the addition of water in the chute, eddy current will be produced,  allowing the gravels to be kept in the state of the semi-suspension. If the  gravels move down the chute and gradually flow out of the chute, and the place  gold concentrates in the chute, the place gold will be separated completely  from the gravels.

II. Explanations of structure

With light steel rail as a pulley foundation plan and  provision of 4 balancing wheels to slide and support the chute; the chute  bottom covered with plastic felts and the interlocked chute for compression;  the front of the chute fitted with cycloidal reducer to drive cam and to push  backward bar; return of compressed spring developing vibration.

III. Main  technical data

 1.Specification of chute: length of  groove：    2500  mm

a)   Upper width：  ;  350 mm，lower width:    480 mm，in opening type，groove height：    150  mm.

b)  Vibration frequency：163 times/min.

c)   Stroke:：35~    40 mm，adjustable.

d)  Power: 1.5 kw.

e)  Slope of chute: 10.5°~12°.

f)   Weight：    380 kg.

g)  Auxiliary equipment：

（1）、2 submersible pump  0.7 kw.

（2）、water supply quantity:    15m³/h.

（3）、2 suction pipe（some）.

（4）、plastic felt    0.8 m².

IV. Installation and Operation

1. The  installation location is determined in accordance with the actual conditions on  site , generally to be located near beneficiation chute or in the place of  clean water. 

2、The location of separator installation  will be leveled up and compacted before the separator being steadied with  longitudinal grade adjusted to be 10.5⁰~12⁰ and lateral  to be level.

3、The bottom of separator will be pressed  properly with gravel to prevent it from jumping.

4、Water  spray pipe is adjusted properly to directly spray into feeding tank prior to  starting up the machine.

5、Concentrates will be fed into feeding tank of the separator with  small- size shovel continuously. Due to the impact of water, the concentrates  will flow automatically into the tank of the separator, which will take 30  minutes or so to complete.

6、After completion of feeding, washing  with water and vibrating 1~2 min before cleaning up.

7、In cleaning chute, placer gold primarily  is located in feeding tank and there is no placer gold in the front, middle and  rear of the separator.

8、In cleaning chute, to reduce washing  operation, placer gold may be screened with iron wire knitted    8 mm×    8 mm to remove big  gravel before being washed manually. In screening operation, attention should  be paid to checking presence of lump of gold.

9、If there is more granular gold,  secondary cleaning may be conducted to ensure the recovery rate.

10、If lattices of chute are blocked by  gravel, timely treatment should be made to ensure its smoothness.

11、When the separator is not used, no goods  are allowed to be placed in it and no person is allowed to sit in groove to  ensure its lifetime.

12、Note: when water supply quantity is  large, slope can be adjusted to be small and when water supply quantity is  small, slope can be adjusted to be big to keep the felt unexposed.