In this paper,the characters of structural superimposed halo in and Dongtongyu giant-size quartz type gold deposit have been summed up.Base on these characters,we construct ideal structural superimposed halos model of deposit in Dongtongyu.From the model,we draw some marks on blind ore body p redicting in deep.We get asplendid predicting result on using the model and marks.
The 358 High land Rock-Gold Mine located in granite-porphyry that intrude at late Cretaceous.The ore is quartzite and which arraied in parallel approximately.The ore- body have had some characteristic such as expand and shrink, fork and multiplex,and the content of mineral is changed in largely also. The Ore-bed is belong to multiplex-quartzite type of stuff cranny by middle-low hot-liquid.
The paper put forward the prospecting potential of DongAn gold ore field by analying its geological background,characteristics and mechanism of ore deposit.
There are two groups of faulted structure, faulted structure in northwest is product of inheritance and reform from basal structure. Faulted structure in northwest is the main structure of guiding rock and guiding mine in local zone,impregnation auriferous ore is the main type of ore, it is about 60% in gross ore, it is the structure of allotriomorphic granular, and the impregnation construction, it contain 5% ~ 15% metal mineral, the main metal mineral is pyrite,arsenopyrite and galena are in the next place.
Mechanism and phenomenon of subsidence induced by mining under fragmentized rockstrip was analyzed in the paper.Discrete elementmethod, DEC and control param eters of the UDEC were introduced. The mechanism was testified with discrete element numerical simulation through an engineering example.
Alkaline hot- press oxidization pretreatment technology is an effective pretreatment technology which is widely used in the world for refractory gold ores. In this paper, Therew ere some alkaline hot-press oxidation pretreatment experiments had been done and the influence law of the concentration of mine shurry, alkaline quantity, temperature,pressure, time, ore size, SAA quantity, alkalimedium, chemical pretreatment and catalyst adding etc. were system atically studied for alkalin gold ores. The oxidizing rate of the sulphur over 98% and the leaching rate of gold over 95% in the conditions of the hot- press oxidization pretreatment as 90%-325 meshes ore size , 20% concentration of mine shurry , 20 kg/t Ca(OH)2 and 10 kg/t NaOH, chemical pretreatm ent 24 hrs before hot-press oxidization pretreatment, 3.2 MPa pressure, 220 ℃ temperature and 3.3 hrs pretreatment time.
In order to improve techn ique of production and reduce cost in the process o fm ineral production. Adopting patio underpropped with wood replace jamb patio previously in the process of ore pick of circling. Its' mature that technical conditional and Its' considerable tha teconomical benefit.
This paper focused and discussed som e prob lem s of the Jiao jia s' new tailing cem ented material that exists in the mineral filling and pointed out the different characteristics in filling between the new tailing cemented material and the traditional cemented material, and give some suggests to solve.
The new condensable Laboratory Industry Trial,The great effecting to the cost of mining is high cost of clot,so we base on lower cost, lower loss and poverty rate, higher efficient. By studying from other and studying in ourselves, we put forward adopting new condensable stuff instead of concrete.And applying alteration system in clot, changing lead of clot,trialin laboratory and industry. We draw the conclusion that adopting new condensable stuff have a series of advantage, such as lower cost, lower loss and poverty rate, higher efficient, higher intensity of period, better security condition, the mileage is very obvious in economy and social.
The app lication o fHP cone crushers in the designing and transformation o f crush ing in steel and non-ferrous metallurgy concentrator is described. The practice show ed that the 0~ 5 mm powder content in the product of HP high efficiency cone crusher was not ably higgher than that of old type spring cone crusher. "more crushing and less grinding"was thus realized with the least investment and ballmill efficiency and through-put were raised without changing the crushing technology, thus achieving good economic benefit.
We will analyze systematically the ore proportioning management in this article, thereby systematizing this operation, hoping to improve the ore proportioning ability of the mining company through the modern management idea.
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