分級(jí)機(jī)下開(kāi)口高低、分級(jí)機(jī)下開(kāi)口大小、分級(jí)機(jī)上開(kāi)口高低、分級(jí)機(jī)上開(kāi)口大小是在設(shè)備安裝期間進(jìn)行現(xiàn)場(chǎng)制作，在許多選廠，因?yàn)樵谠O(shè)備安裝中分級(jí)機(jī)開(kāi)口大小高低沒(méi)有進(jìn)行調(diào)整好，而工人在操作過(guò)程中又不太留意，無(wú)形也是影響了磨礦作業(yè)。分級(jí)機(jī)下開(kāi)口低，相對(duì)是礦砂沉淀區(qū)大了，所以返砂量將大，磨礦細(xì)度相對(duì)細(xì)，分級(jí)機(jī)下開(kāi)口大，相對(duì)是礦砂沉淀區(qū)大了，水流較為平緩，所以返砂量將大，磨礦細(xì)度相對(duì)細(xì)，分級(jí)機(jī)上開(kāi)口低，返砂量相對(duì)大，磨礦細(xì)度相對(duì)變細(xì)，分級(jí)機(jī)上開(kāi)口大，相對(duì)返砂量相對(duì)大，磨礦細(xì)度相對(duì)變細(xì)。否則相反。我們要假定其它影響因素一切正常，原則是：在磨礦細(xì)度一定的情況下，我們要最大化地提高處理量，這樣可以有效地提高生產(chǎn)效率。（大部分礦石，特殊礦種除外）相對(duì)而言，磨礦細(xì)度越細(xì)，有用礦物與脈石礦物的解離越充分，對(duì)提高金屬的回收率有利，所以在處理礦量一定的條件下，盡可能地提高磨礦細(xì)度。另外，磨礦是選礦工藝的第一環(huán)節(jié)，為了保證生產(chǎn)的穩(wěn)定，磨礦要盡可能的保證穩(wěn)定。 在給礦量一定的情況下，排礦口處沖水大小、給礦量大小直接影響磨礦的細(xì)度粗細(xì)，在國(guó)內(nèi)許多礦山現(xiàn)沒(méi)有實(shí)現(xiàn)磨礦自動(dòng)化，水量的大小，直接由球磨工進(jìn)行手動(dòng)調(diào)節(jié)，因?yàn)檫@兩處的水流較大，增大與減小很難看出，所以必須要求進(jìn)行細(xì)致的觀察與細(xì)微地調(diào)整。首先我們一定要明白，節(jié)能球磨機(jī)給水增大，磨礦濃度變稀，磨礦細(xì)度會(huì)變粗，相反，節(jié)能球磨機(jī)給水減小，磨礦濃度變大，磨礦細(xì)度會(huì)變細(xì)。節(jié)能球磨機(jī)排礦口處沖水變大，溢流變稀，溢流細(xì)度變細(xì)。相反，節(jié)能球磨機(jī)排礦口處沖水變小，溢流變濃，溢流細(xì)度變粗。所以在其它條件包括礦量不變的情況下，要提高磨礦細(xì)度，可以把節(jié)能球磨機(jī)給水減小，節(jié)能球磨機(jī)排礦口處沖水增大，最好這兩個(gè)條件同時(shí)調(diào)整，以保證盡可能減小因?yàn)槟サV細(xì)度的調(diào)整引起礦槳量的變化因而引起浮選的波動(dòng)。
Classifier opening height and the classifier opening size, classifier opening level, the classifier opening size is during the installation of on-site production. In many plant, because in the equipment installation classifier opening size and height are not adjusted well, and workers in the operation process and not so aware, intangible and affects the grinding operation. Classifier with low opening, the relative is ore precipitation area big, so the returned sand amount will, grinding fineness is relatively fine, classifier under large openings, is relatively ore precipitation area big, the water flow more quietly, so back to the sand content will, grinding fineness is relatively fine, classifier with low opening, returned sand amount is relatively large, grinding fineness is relatively thinner, classifier on a large opening, relative return sand content relatively high, grinding fineness became relatively thinner. Otherwise. We have to assume that other factors that affect the normal, the principle is: in the grinding fineness of certain circumstances, we must maximize the amount of treatment, so that we can effectively improve the production efficiency. (most of the ores, with the exception of the special types of minerals) in relative terms, grinding fineness finer, the dissociation of useful minerals and gangue minerals more fully, to improve metal recovery rate favorable, so in the amount of ore handling certain conditions, as far as possible improve grinding fineness. In addition, grinding is the first part of mineral processing technology, in order to ensure the stability of production, grinding to ensure the stability of the. Under some conditions to the ore, row ore mouth at flush size, to the amount of ore size directly affect the thickness of the fineness of ore grinding, in many domestic mines now did not achieve the grinding automation, the size of the water directly by ball grinder were manual adjustment, because of the large flow, increases and decreases it is difficult to see, so must require careful observation and fine tuning. First of all, we must understand that the energy saving ball mill feed, grinding concentration of dilute, grinding fineness will become rough, on the contrary, energy-saving ball mill feed, grinding concentration becomes large, grinding fineness will become fine. The port of discharge at flushing energy-saving ball mill becomes large, overflow overflow fineness dilute flow. On the contrary, such milling discharge mouth flushing overflow becomes small, thick, thick overflow fineness. So in other conditions including ore quantity is unchanged and in order to improve the grinding fineness, can reduce the energy saving ball mill feed, energy saving ball mill discharging mouth at flushing increases, the best the two conditions are adjusted at the same time, in order to ensure as far as possible to reduce because the grinding fineness adjustment caused by fluctuations in the ore oar volume changes due to the flotation.
|
