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熱門關鍵詞Hot Keywords:洗沙機/sand washing machine,洗沙設備/sand washing equipment,廣東洗砂機/Guangdong sand washing machine,洗砂機/sand washing machine
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洗礦機在亮登場,設備給力,動力不弱!/The washing machine is on the bright stage, the equipment is powerful, and the power is not weak.

來源: 時間:2018-01-10 08:42:28 次數:

有很多客戶都會咨詢一個問題就是購買洗礦機的感受:1、眾聯的洗礦機動力超強悍,這點請放心!2、停機速度超好,跟其它的設備不一樣,需要一段時間;3、洗礦機對于破碎礦石超給力,是經過特別設計的。4、洗礦機所用的部件都是經過熱處理的超耐磨,很厲害的。5、外現,近看很大氣,結實,從遠處看更加雄壯。列舉此幾點供大家參考一下,現在我們來說一下對于物料稀土多金屬鐵礦石的選礦吧!

   鐵礦為一大型沉積變質一熱液交代型含鈮、稀土多金屬鐵礦床。礦石中含有鐵、鈮、稀土、釷、鈦、鋇、錳、氟及磷等71種元素,其中鐵、稀土、鈮、氟等均有綜合利用價值。礦石中鐵礦物主要為赤鐵礦、磁鐵礦、假像赤鐵礦及少量黃鐵礦、褐鐵礦、菱鐵礦。稀土礦物主要為獨居石、氟碳鈰礦、磷鑭鐠石、氟碳鈣鈰礦等。鈮礦物主要為鈮鐵礦、黃綠石、易解石、鈮鈣礦、鈦鐵金紅石等。脈石礦物主要為螢石、鈉輝石、方解石、鈉長石、鈉閃石、白云石、石英、玉髓、云母等,該鐵礦石的主要特點是:元素多,組成復雜,綜合利用價值高;礦物種類多,稀土元素賦存集中;礦物嵌布粒度細,分布均勻。因此屬于難選礦石。

   我們建議該選礦廠采用一重一浮聯含選礦工藝流程,經洗礦機洗礦后礦石先用弱磁選機選出強磁性鐵礦物,然后用浮選選出品位為15%左右的稀土泡沫,再用強磁選機選出弱磁性鐵礦物,與強磁性鐵礦物合并為鐵精礦。對稀土泡沫用搖床選別得到粗精礦、中礦和尾礦、粗精礦和中礦用浮選繼續選別,用環肟酸銨作捕收劑,經一粗一精浮選后,可得到稀土品位大子60%的精礦。如欲再提高精礦品位,可繼續精選,經五次精選后,即可得到品位68%( REO)以上的稀土精礦。搖床中礦再經粗選、精選,可得到品位30%( REO)左右的稀土次精礦。 鐵精礦的加工利用:選礦廠所得的鐵精礦,主要用作煉鐵原料。由于細粒鐵精礦不宜直接加入煉鐵高爐。須先加入熔劑,再高溫燒結成塊;或添加粘合劑壓制成型;或滾成小球再燒結成球團;然后裝入高爐內冶煉。高爐冶煉是把鐵礦石還原成生鐵的連續生產過程。在高內礦石中的鐵及部分硅、錳被焦炭還原出來,與碳組成熔融的生鐵,礦石中的脈石與石灰石組成熔渣,兩者分別由爐缸的出鐵口與出渣口流出。冶煉產品可以是供煉鋼用的生鐵,或者是鑄造生鐵,或者是高爐鐵合金。煉鋼主要的原料是生鐵。生鐵所含的碳及固有雜質(硅、錳、磷、硫和碳)都是在高爐冶煉,過程中從鐵礦石及其他原料轉入生鐵的;而煉鋼的任務就在于,在液體生鐵中用某種方法引入某些數量的氧把這些元素燒掉,所以叫作氧化熔煉。在一定條件下氧和溶解于生鐵中的硅、錳、磷以及某些數量的鐵起反應,把它們變成氧化物。這些氧化物在金屬中的溶解度都很小,因而差不多全部浮出并形成爐渣。當金屬中各元素的含量經過一系列操作步驟已羥符合規格,而溫度也符合澆鑄的要求時,煉鋼的任務就完成了。但是煉鋼車間是以鋼錠作為后產品,因此,煉鋼的任務還包括鑄錠工作。


There are many customers will consult a question is to buy the feeling of washing machine: 1, Zhonglian washing machine powerful, please rest assured! 2, the shutdown speed is very good, unlike other equipment, it takes a while; 3, the washing machine is specially designed for crushing ore. 4. The parts used in the washing machine are super wear-resistant and very powerful after heat treatment. 5. It's very grand and strong in the near view, and more magnificent in the distance. Now let's talk about the beneficiation of rare earth polymetallic iron ore!
The iron ore is a large-scale sedimentary metamorphic hydrothermal metasomatic Nb and re bearing polymetallic iron deposit. The ore contains 71 elements such as iron, niobium, rare earth, thorium, titanium, barium, manganese, fluorine and phosphorus, among which iron, rare earth, niobium and fluorine are of comprehensive utilization value. Iron minerals in the ore mainly include hematite, magnetite, pseudohematite and a small amount of pyrite, limonite and siderite. Rare earth minerals are mainly monazite, bastnaesite, praseodymium phosphorite, bastnaesite and so on. Niobium minerals are mainly niobium iron, Yellowstone, calcite, niobium calcium ore, ilmenite rutile, etc. Gangue minerals are mainly fluorite, spodumene, calcite, albite, albite, dolomite, quartz, chalcedony, mica, etc. the main characteristics of the iron ore are: many elements, complex composition, high comprehensive utilization value; many kinds of minerals, concentrated occurrence of rare earth elements; fine mineral distribution, uniform distribution. Therefore, it belongs to refractory ore.
We recommend that the concentrator should adopt one floatation combined with ore dressing technological process. After washing the ore by washing machine, the ore will first select ferromagnetic iron minerals with weak magnetic separator, then select rare earth foam with grade of about 15% by floatation, and then use the strong magnetic separator to select the weakly magnetic iron mineral and combine it with the ferromagnetic iron ore into iron concentrate. The rare-earth foam is selected by shaking table to get the flotation of coarse concentrate, middling and tailings, coarse concentrate and middling flotation. With the ammonium cyclic oxime acid as collector, the concentrate of rare earth grade 60% can be obtained after flotation. If you want to improve the concentrate grade again, you can continue to clean. After five times of cleaning, you can get the rare earth concentrate with a grade of more than 68% (REO). After roughing and cleaning, the re secondary concentrate with a grade of about 30% (REO) can be obtained. Processing and utilization of iron concentrate: the iron concentrate obtained from the concentrator is mainly used as iron making raw material. Because the fine iron concentrate should not be directly added to the blast furnace. It is necessary to add flux first, and then sinter into block at high temperature; or add binder to press and form; or roll into small ball and then sinter into ball; then put it into blast furnace for smelting. Blast furnace smelting is a continuous production process of reducing iron ore to pig iron. Iron and part of silicon and manganese in gaonei ore are reduced by coke to form molten pig iron with carbon, gangue and limestone in ore to form slag, both of which flow out from the iron tap and slag tap respectively. Smelting products can be pig iron for steelmaking, cast pig iron or blast furnace ferroalloy. The main raw material for steelmaking is pig iron. The carbon and inherent impurities (silicon, manganese, phosphorus, sulfur and carbon) contained in pig iron are all smelted in blast furnace, and transferred from iron ore and other raw materials to pig iron in the process. The task of steel-making is to introduce some amount of oxygen into liquid pig iron to burn these elements, so it is called oxidation smelting. Under certain conditions, oxygen reacts with silicon, manganese, phosphorus and some amounts of iron dissolved in pig iron, turning them into oxides. The solubility of these oxides in metals is very small, so almost all of them float out and form slag. When the content of each element in the metal has met the specification through a series of operation steps, and the temperature also meets the requirements of casting, the task of steelmaking is completed. But the steelmaking workshop takes ingot as the final product, so the task of steelmaking also includes ingot casting.

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