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?jǐn)嚢杷缮⒌牡V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

型號規(guī)格Model	單位 Uite	CGSL-100 （背景場強0～1.75T）	CGSL-100 （背景場強0～1.2T）
分選腔直徑×高度 Diameter×Height of separating cavity	mm	Φ100×100	Φ100×100
背景磁感強度Background field	T	0～1.75	0～1.2
激磁電流 Energizing current	A	0～1900	0～1200
激磁電壓 Energizing Voltage	V	0～30	0～16.4
激磁功率 Energizing Power	kw	0～57	0～19.7
脈動電動機功率 Pulsating Power	kw	0.55	0.55
脈動沖程 Pulsating stroke	mm	0～30	0～30
脈動沖次 Pulsating times of stroke	r/min	0～600	0～600
磁介質(zhì)堆尺寸（直徑×高）Size	mm	Φ100×10 （62.4×62.4×100）	Φ100×100 （62.4×62.4×100）
給礦粒度（-200目％） Ore-Feeding size	mm	-1.3（50～100）	-1.3（50～100）
給礦濃度 Ore-Feeding density	％	5～40	5～40
給礦量 Capacity	g/cycle	100～600	100～600
供水壓力 Water pressure	MPa	0.1～0.3	0.1～0.2
主機外形尺寸Overall dimensions	mm	1750×1180×1720	1600×800×1600
主機重量 Weight	kg	1350	1150