一、概述

CGSL-100  周期式脉动高梯度磁选机（以下简称CGSL-100 磁选机），有两种型号，         最高场强分别达到1.2T 和1.75T。该机适用于-1.3 毫米（-200 目占50％～100％）的细粒氧化铁矿、锰矿、黑钨矿、钛铁矿等弱磁性金属矿的湿式分选和黑白钨分离、黑钨与锡石分离，也可用于非金属矿如石英、长石、高岭土等的除铁和提纯。它配有         脉动机构，冲程冲次和背景磁感强度可在较大的范围内连续无级调节，具有富集比大、         分选效率高，不易堵塞，对给矿粒度、浓度和品位的波动适应性强，工作可靠，操作         维护方便等优点。

该机每个选矿周期给矿量100～600 克，可供实验室做小型试验或少量制备矿产品之用。

二、设备构造

        如图1 所示，该机主要由给矿室、磁极头、铁轭、激磁线圈、磁介质、脉动机构、脉动斗、调节阀组成。

        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

选矿时，启动脉动机构，调节好流速，调节激磁电流至所需要的背景磁感强度，         磁介质在磁场中被磁化，其表面形成高梯度磁场，将充分搅拌松散的矿浆从给矿室给入，沿上磁极头的孔洞流入分选腔，矿浆中的磁性颗粒被吸着在磁介质表面。非磁性颗粒沿下磁极头的孔洞流入脉动斗排走。每周期给矿完成后，可加入适量清水漂洗精矿，以进一步提高磁性物纯度，然后切断激磁电源，用清水将磁性物冲洗出来，即完         成一个周期的选矿。

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、规格型号和主要参数 Specifications and Parameters

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