一、用途

Ⅰ.Use

本機適用于科研、教學、礦產資源綜合利用和評價，以及對紅鐵礦的選別，只需少量試樣即可獲得檢驗礦物含鐵量技術指標。本產品由原地礦部唯一指定企業生產，執行行業標準。

本機供冶金、地質、建材、化工、輕工等部門科研試驗單位作為分選中等至弱磁性礦物實驗研究之用，亦可供有關廠礦檢查、控制生產技術指標，改進工藝流程之用。

本機在PLC機的控制下，在初始狀態自動復位：即給礦閥置關閉狀態，分礦斗置尾礦位置。并設置過底過程延時3S，以免相互混樣，即分礦斗在“尾礦”“中礦”、“精礦”作用過程停留3S。選別工作過程是：攪拌桶內礦漿經過給礦閥及扁嘴進入分選箱內，非磁性礦粒在重力的作用下沿齒板間隙落入尾礦桶中，磁性礦粒在磁場的作用下吸附在齒板上，給礦后分礦斗擺至中礦桶上部，中礦沖水電磁閥開啟，（流量可調節中礦沖水閘閥），沖洗分選箱中夾雜的非磁性礦粒，然后分礦斗擺至精礦桶上部，同時切斷充磁電源，待分選箱磁場消失后，精礦沖水電磁閥開啟，將吸附在齒板上的磁性礦粒沖入精礦桶內（沖水量由精礦閘閥調節），完成一次選別循環后，PLC復位進行下一次，以一次選別循環。達到磁性礦與非磁性礦分離的目的。

It is applicable in scientific research, teaching and comprehensive utilization and assessment of mineral resources and for separation of hematite. Iron content for the tested samples can be obtained merely with minor test samples. The product is produced by the only enterprise designated by the former Ministry of Geology and Mineral Resources, in compliance with the Industrial standards.

It is provided for labs of metallurgical, geological, building material, light and other industries to carry out separation tests of moderate and weak-intensity magnetic minerals and also for the relevant factories and mines to check and control production and technical indexes, improving technological process.

It can automatically reset at the initial stage under the control by PLC, i.e. feeding valve being in the close state and ore separating hopper in the position of tailings. The excessive process delay is made at 3S to avoid mutual blending of samples, namely the ore separating bucket delaying 3S in the process of actions of tailings, middlings and concentrates .The separation operation process is that ore slurry in mixing tank is directed through feeding valve and flat nozzle into separating tank ; non-magnetic minerals with the action of gravity drop into tailing tank along the gaps of gear rack; magnetic mineral particles with the action of magnetic field are absorbed on the gear racks;the ore separating hopper after feeding swings to the upper middlings tank; the middlings flush open solenoid valve ( flowrate can adjust the middling flushing gate valve);non-magnetic minerals particles entrained in the ore separating tank are flushed  before the ore separating hopper swings to the upper concentrate tank and meanwhile de-energize magnetizing power supply; after magnetic fields of the separation tank disappear, the flushing solenoid valve opens and flushes the magnetic mineral particles absorbed on the gear rack into the concentrate tank ( flush volume to be controlled by the concentrate gate valve).After completion of one cycle of separation operation, PLC makes reset to the next cycle for achieving the objective of separation of magnetic from non-magnetic minerals.

二、結構簡介

II. Structure

本機由磁系、給礦、接礦、程序控制器、分選箱；供水系統、機架等部分組成。

This machine is composed of magnetic  system, feeding part, receiving part, programmable controller, separation tank,  water supply system, frame, etc.

（一）磁系：

(I)  Magnetic System

1、鐵芯：由五塊DT3電工純鐵組裝成U字型磁路，鐵芯斷面尺寸130×220。

1. Iron ore: Five pieces of DT3 electrical  pure iron are assembled into U type magnet circuit. The cross dimension of the  ore is 130×220.

2、激磁繞組：用1.81×5.5雙玻璃絲包扁銅線繞制成充磁線圈，分八個線圈串聯配置在分選區兩側，并設風機冷卻繞組。

2. Exciting winding: Double glass-fiber  covered rectangular copper wires of 1.81×5.5 is winded into magnetizing coils.  Eight coils are connected in series to the two sides of separation area.  Besides, fan cooling windings are installed.

3、分選箱：由五塊DT3純鐵齒板及兩塊鋁質擋板組成，有分選間隙為1.5，2，3三套分選箱，供根據需要更換使用。

3. Separation tank: The separation tank is  composed of five DT3 pure iron tooth plates and two aluminum baffles. Three  sets of separation tanks with separation gaps of respectively 1.5, 2 and 3 are  available for replacement according to actual needs.

（二）、給礦、沖礦及接礦裝置

(II)  Feeding, Washing and Receiving Device

在分選箱上部裝有攪拌桶，其有效容積為4升，在攪拌桶底部由管式給礦閥，給礦閥出口處的三通通過橡膠管分別與進水管及銅扁嘴連接，扁嘴由電動機帶動作往復運動，入選礦漿從攪拌桶經給礦閥、扁嘴均勻地進入分選箱內。

On the top of the separation box is  installed agitation tank whose effective volume is 4 liter. At the bottom of  the agitation drum, the tubular feeding valve, and the tee joint at the outlet  of feeding valve are respectively connected to the inlet pipe and rectangular  copper mouth through the rubber hose. The rectangular mouth is driven by motor  to do reciprocating motion. The selected slurry enters the separation tank  evenly from the agitation tank through the feeding valve and rectangular mouth.

中礦沖洗水和精礦沖洗水分別從1/2電磁閥及閘閥經三通管及扁嘴進入分選箱，其水量通過閘閥調節。

Middling washing water and concentrate  washing water flow into the separation tank respectively from the 1/2  electromagnetic valve and sluice valve through the three-way pipe and  rectangular mouth. Their amount of flowing water can be adjusted with the  sluice valve.

分選的產品從分選箱排出，經分礦斗流入指定的接礦桶內。分礦斗由同步電機和偏心連桿機構帶左右擺動，在程序控制器的控制下，電機帶動分礦斗擺至某一接礦桶上部，其控制程序是：充磁——給礦——中礦沖水——斷磁——精礦沖水——充磁——給礦——中礦沖水——斷磁——精礦沖水反復循環，實現“尾礦”、“中礦”、“精礦”產品的選別的接取。

The separated products are discharged out  from the separation tank and flow into designated receiving drum through the  separation hopper. The separation hopper swings from left to right after the  drive of the synchronous motor and eccentric connecting rod mechanism. Under  the control of program controller, the motor drives the separation hopper which  then swings to the position above the receiving drum. The specific control  procedures are: Magnetizing – feeding – flushing the midding – demagnetizing –  flushing the concentrate – magnetizing –feeding –flushing the midding  –demagnetizing –flushing the concentrate; such cycle is repeated to realize the  receipt of the sorted “tailings”,  “middling”, and “concentrate” products.

（三）、電氣及程序控制部分

(III)  Electric and Program Control Parts

充磁電流采用單相橋式整流，用SSR調壓模塊調節充磁電流的大小。

Single phase bridge type rectifying current  is adopted as the magnetizing current whose value is regulated through SSR  voltage regulating module.

程序控制器采用日本三菱FX1S-14MR可編程控制器（簡稱PLC機）是控制各項動作的核心部件。整個運行程序已寫入PLC機，用戶在實際操作中只需根據選礦工藝要求在指定的時間繼電器分別改變“給礦”時間及“中礦”、“精礦”沖水時間即可。

The program controller adopts the FX1S-14MR  programmable controller manufactured by Mitsubishi in Japan which controls the core part  of various operations. The whole operational procedure has been included in PLC  machine. During practical operation, the user only needs to change the time for  “ore feeding” and the time for flushing “middling” and “concentrate”  respectively within designated time according to the requirements for  beneficiation technology.

由于線包和鐵芯特性一定，該機充斷磁時間已固化在PLC機中，其充斷磁時間分別為10S和15S。

Since the properties of coils and iron  cores are fixed, the demagnetizing time of this machine has been set on the PLC  machine. Its magnetizing and demagnetizing time is respectively 10s and 15s.

三、工作原理

III. Working Principle

本機在PLC機的控制下，在初始狀態自動復位：即給礦閥置關閉狀態，分礦斗置尾礦位置。并設置過底過程延時3S，以免相互混樣，即分礦斗在“尾礦”“中礦”、“精礦”作用過程停留3S。選別工作過程是：攪拌桶內礦漿經過給礦閥及扁嘴進入分選箱內，非磁性礦粒在重力的作用下沿齒板間隙落入尾礦桶中，磁性礦粒在磁場的作用下吸附在齒板上，給礦后分礦斗擺至中礦桶上部，中礦沖水電磁閥開啟，（流量可調節中礦沖水閘閥），沖洗分選箱中夾雜的非磁性礦粒，然后分礦斗擺至精礦桶上部，同時切斷充磁電源，待分選箱磁場消失后，精礦沖水電磁閥開啟，將吸附在齒板上的磁性礦粒沖入精礦桶內（沖水量由精礦閘閥調節），完成一次選別循環后，PLC復位進行下一次，以一次選別循環。達到磁性礦與非磁性礦分離的目的。

Under the control of PLC Machine, this  equipment automatically returns to its original state. That is, the feeding  valve is put under closed conditions and the separation hopper is put in  tailings position. Besides, the operation time is prolonged for 3s during such  process to avoid mixing of samples. That is, the separation hopper stays for 3s  during the action process of “tailings”, “middling”, and “concentrate”. The  separation process is: The slurry in the agitation drum enters the separation  tank after passing the feeding valve and rectangular mouth. The non-magnetic  ore grains falls into the tailing drum along the gap of toothed plate under the  action of gravity. The magnetic ore grains are absorbed on the toothed plate  under the action of magnetic field. After the ore is fed, the separation hopper  swings to above the middling drum. The middling flushing electromagnetic valve  is opened (the flow can adjust the middling flushing sluice valve) and flush  the non-magnetic ore grains mixed in the separation tank. Then the separation  hopper swings to above the the concentrate drum. At the same time, the  magnetizing power is connected. After the magnetic fields of the separation  tank disappear, the concentrate flushing electromagnetic valve is opened and  the magnetic ore grains sucked to the toothed plate is flushed into the  concentrate drum (the volume of flushing water is regulated by the concentrate  sluice valve). After one separation cycle is finished, the PLC machine resets  and enters the next separation cycle, so that the magnetic ores can be  separated from the non-magnetic ores.

四、技術參數

Ⅳ. Technical Parameters