一、概述

CGSL-100  周期式脈動高梯度磁選機（以下簡稱CGSL-100 磁選機），有兩種型號，         最高場強分別達到1.2T 和1.75T。該機適用于-1.3 毫米（-200 目占50％～100％）的細粒氧化鐵礦、錳礦、黑鎢礦、鈦鐵礦等弱磁性金屬礦的濕式分選和黑白鎢分離、黑鎢與錫石分離，也可用于非金屬礦如石英、長石、高嶺土等的除鐵和提純。它配有         脈動機構(gòu)，沖程沖次和背景磁感強度可在較大的范圍內(nèi)連續(xù)無級調(diào)節(jié)，具有富集比大、         分選效率高，不易堵塞，對給礦粒度、濃度和品位的波動適應(yīng)性強，工作可靠，操作         維護方便等優(yōu)點。

該機每個選礦周期給礦量100～600 克，可供實驗室做小型試驗或少量制備礦產(chǎn)品之用。

二、設(shè)備構(gòu)造

        如圖1 所示，該機主要由給礦室、磁極頭、鐵軛、激磁線圈、磁介質(zhì)、脈動機構(gòu)、脈動斗、調(diào)節(jié)閥組成。

        1.Introduction

        CGSL-100  cyclic pulsating high gradient magnetic separator (we call CGSL-100 for short  below) is fit for the wet beneficiation of fine weakly magnetic metallic ore,  which grain size is –1.3mm  (-200mesh 50%~100%), such as iron oxide, manganese, wolframite and ilmenite, and  the separation between wolframite and scheelite and that between wolframite and  cassiterite, and deferrization and purification of the non-metallic ore such as  quartz, feldspar and kaolin. It is equipped with pulsating mechanism. The  pulsating frequency and background magnetic induction could be continuously  adjusted in a wide range. It has the advantages of high enrichment ratio, high beneficiation  ratio, matrix not easy to be clogged, adaptability for the change of grain  size, consistency and grade of the feed, stability for work and convenience for  operating and maintaining.

The  processing capacity of this machine which could be applied for doing small  batch tests in a laboratory or making a little ore product is 100~600 grams in  a batch. CGSL-100 has two types which can reach the maximum background magnetic  field strength 1.2 Tesla and 1.75 Tesla respectively.

2.Structure

The CGSL-100 cyclic  pulsating high gradient magnetic separator mainly consists of feeding box,  magnetic pole, magnetic yoke, energizing coils, magnetic matrix, pulsation  mechanism, pulsation box and valve.

Fig.1 CGSL-100 cyclic  pulsating high gradient magnetic separator
1=feeding box, 2=magnetic  pole, 3=magnetic yoke, 4=energizing coils, 5=magnetic matrix, 6=pulsation  mechanism, 7=pulsation box, 8=valve.

三、工作原理

選礦時，啟動脈動機構(gòu)，調(diào)節(jié)好流速，調(diào)節(jié)激磁電流至所需要的背景磁感強度，         磁介質(zhì)在磁場中被磁化，其表面形成高梯度磁場，將充分攪拌松散的礦漿從給礦室給入，沿上磁極頭的孔洞流入分選腔，礦漿中的磁性顆粒被吸著在磁介質(zhì)表面。非磁性顆粒沿下磁極頭的孔洞流入脈動斗排走。每周期給礦完成后，可加入適量清水漂洗精礦，以進一步提高磁性物純度，然后切斷激磁電源，用清水將磁性物沖洗出來，即完         成一個周期的選礦。

3.  Principle of Operation

        Start  the pulsation mechanism and adjust the velocity of the feeding and the  background magnetic induction to the needed value before doing the batch test.  The background magnetic induction can be controlled by adjusting the energizing  current. When electricity is given to the energizing coils, a magnetic field  will be built up. And the matrixes in the magnetic field are magnetized with  high gradient magnetic field formed around them. Feed the incompactly stirred  slurry through the holes of upper magnetic pole into the separating zone from  the feeding box. The magnetic particles of the slurry can be attached onto the  surface of the matrix, and non-magnetic particles enter into the pulsation box  by the holes of lower magnetic pole and then are discharged. Put in some water  for rinsing the concentrates in order to upgrade magnetic particles after one  batch testing. Then shut off the energizing power and use clean water to wash  out the magnetic particles, one batch testing is done.

四、規(guī)格型號和主要參數(shù) Specifications and Parameters

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