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Study on Separation Technology for Donganshan Hematite Ore

Author: ChenGuoRong
Tutor: HanYueXin；ZhangMing
School: Northeastern University
Course: Mining Engineering
Keywords: Lean hematite Gravity separation High intensity magnetic separation Direct flotation Revese flotation
CLC: TD951
Type: Master's thesis
Year: 2008
Downloads: 146
Quote: 2
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Abstract


The red iron mine in mountain in Donganshan ore is a red iron mine in lean ore that our country is typical and opposite and difficult to separate, the mineral species is the construction structure complicacyiron mine thing including distribution a degree is fine.Since set up the factory in 1958, fall in pieces the craft adopt three segment a the closed circuit craft is always applied up to now. Choosing the mineral craft adoption two pieces continuesto mill the mineral, one alkaline floation the craft that choose.because of DongAnshan iron mine mineral ore oneself existent characteristics, add it choose the mineral craft falls behind, making in arrear of and local and red iron mine in economic index sign in technique that choose the factory chosen the mineral factory, the personal status of the mineral of concentrate is lower only have 59-60%, can’t satisfy the bottom a the request of the work preface. Face the situations that stop production once. Many in the last years, choose the mineral technique the worker to increases around separate DongAnshan the economic performances in technique in mineral made large quantity works, obtaining than for result that show the.Proceeded a flood of laboratory in one alkaline flotation the craft process that choose to experiment with the industry.Along with separation the mineral the technical developping increasingly, in the Qi dashan factory reformed successful experience foundation on,2002 the factory sintering of DongAnshan factory chooses the mineral car a craft proceeded completely of the craft reforms, the two pieces that will continue more than 40 years continues to grind the mineral, one the alkaline float to choose the process change for the two pieces continue to whet the mineral, inside the mineral whet again, inside,magnete anion anti float to choose the craft, new craft the hurl produce to obtain later on in 2002 October than the economic performance that show the Donganshan, choose the economic index sign in technique in mineral got the substantial advance and develop, especially concentrate mineral the index sign comes to 64.5% above, for red iron mine in lean in type in DongAnshan hematite ore separate and do not rise successful demonstration is convenient.New craft the hurl produces hereafter still lower problem in rate of recovery of metals, aim at the process esse of the problem proceeds the craft process of perfect work, first in 2004 to mill the ability shortage again of the problem proceeds the improvement down two original setΦ3200×3100mm the ball of mms whet the machine replaces to 4Φ2700×4000 mm ball overflow mill the machine, increasing abilityof mill, make again mill the mineral finer exaltation 10% or so, reduced circulating-load ration, excellent turned the process of index sign, make choose the mineral craft the index sign had than of of advance,2007 Dong anshan sintering factory mineral processing proceeded the ball whets the large turning reforms engineering, original 10 seriesesΦ3200×3100mm the ball overflow mill replaces forΦ5030×6700 mm three serieses the balls, aiming at in choosing do not craft the problem that magnete choose the ability shortage increased the set that magmate choose the machine count,, in the ratings homework adopt screen cent high and DERRICK in efficiency gram vibration the screen transforming completely in 2007 December the postnatal period chooses the economic index sign in technique in mineral comes to a the concentratemineral the personal status 65%, metals recovery the rate comes to 70% above.This paper introduced craft mineralogy characteristic and ore Ore key component’s chemical composition eligibility research, laboratories of Dong anshan iron ore the small scaled experiment, connecting separate to experiment the single series industry experiment with the spot the technique reforms completely work, analyzed characteristics and crafts of every kind of craft process do perfect after reforming work.

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CLC: > Industrial Technology > Mining Engineering > Beneficiation > Metallic Ore Dressing > Black Metallic Ore Dressing
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