渣浆泵贵金属提金方法
19 什么类型的矿石采用氰化法?常用的氰化法提金方法有哪些?
    用含氧的氰化物溶液，浸出矿石或精矿中的金银，再从浸出液中回收金银的方法称为氰化法。影响氧化浸出的主要因素有金粒大小及形状、矿浆黏度、杂质离子等，因此适宜用氧化法的金银矿石应具有以下特点:金粒较小，一般1~7μm,但金粒太小很难单体解离;矿石含泥较少且不易泥化;磁黄铁矿、砷黄铁矿、辉铋矿、易于氧化物形成络合物的金属矿物、能在金表面生成薄膜的矿物含量较少。
    常用的氰化法提金有:渗滤氯化法、搅拌氧化法、炭浆法提金、炭浸法提金、堆浸法。20什么叫氰化浸出法?
    氰化浸出法也叫氰化法，是用含氧的氰化物溶液，浸出矿有或精矿中的金银，再从浸出液中回收金银的方法。贵金属金银是化学性质稳定的元素，在绝大多数的溶利中不会溶解，但能辩济于氰化物溶液中，空气的存在也影响氖化浸出。
    在氰化过程中，金在稀薄的氰化溶液中，在有氧存在时可以生

成一价的络合物而溶解，其基本反应分为一步反应和两步反应两种。
21什么叫渗滤氰化法? 其流程和特点是什么?
    渗滤氰化法是氰化法提金方法中较为简单易行的一种。渗滤氰化是在渗滤浸出槽中进行的，把待浸出的矿石装满浸出槽，然后加入氰化物溶液浸出。氰化溶液渗滤过矿石层使金溶解，经过渗滤浸出的含金溶液(贵液)透过比槽底稍高的假底(滤底)，经槽壁上的管道流出。贵液排出管位于槽底和滤底之间，矿石经氰化溶液处理后再用清水洗涤，把残留在矿石间隙的含金溶液洗出。贵液送入置换沉淀槽，用锌丝或锌粉置换析出，贫液补加适量氧化物可用于下一批新矿石的漫出，清水洗涤后的矿石即渗滤氰化尾矿。此法设备简单、投资少、见效快，为国内外的小型矿山所广泛采用;溶剂消耗少、省电且氧化后的矿浆不必进行浓缩或过滤。渗滤氧化法通常处理一10mm+0. 074mm的矿砂、较粗粒的培砂及其他疏松多孔的原料，忌处理含有黏土、矿泥、过分细磨的原科和矿粒大小不均匀的原料。矿石中若有黏土、矿泥等细泥状物料，在渗龙氰化之前，首先要进行筛分以及脱泥处理。

22 什么叫搅拌氰化法?其流程和特点是什么?

搅拌氧化法目前是常用的氰化浸出方法。经磨矿分级后的矿浆进入浓缩机脱水，浓缩后送入搅拌浸出槽，往浸出槽中添加适量的氰化液进行浸出。浸出后的矿浆送往固液分离,将含金溶液与氰化尾矿进行分离，固体即氰化尾矿。贵液送往置换沉淀作业，用锌丝

或锌粉置换析出金。然后再进一步进行除杂处理。氰化尾矿根据原矿性质而定，如果含有其他多金属或黄铁矿则综合回收。搅拌设备有机械搅拌式浸出槽、空气搅式浸出槽和空气-机械联合搅拌式浸出槽，此方法是用于处理粒度小于0.3mm的含金矿右，机械化程度高，浸出时间短，浸出效率高。
23什么叫炭浆法(CIP 和炭漫法?其流程和特点以及两者之间的区别是什么?
    炭浆法提金工艺是以氰化物浸出金为基础，一般是指氰化浸出完成之后，一价金氰化物 [KAu(CN)2] 再用炭吸附的工艺。炭浆法主要使用于矿泥含量高的含金氧化矿石。这种矿石使用常规氧化法难以得到良好的技术经济指标，原因在于矿泥含量高，固液分离困难，现有的过滤机均不能使贵液和矿渣有效的分离。炭浆法工艺过程是将含金矿石破碎、磨矿之后进行氰化浸出，矿浆经充分浸出后，加活性炭吸附矿浆中的金，载金炭经过清洗和解吸，分为含金较高的贵液和解吸炭。贵液经电解产出金粉，金粉经熔炼即成为金锭。解吸炭经再生后按比例配在新活性炭中循环使用。
    炭浸法和炭浆法原理相似。炭浸法是把活性炭投入氧化浸出槽中，氰化浸出金和炭吸附金在同槽中进行的方法。
    炭浆法是先将矿中的金浸出，而后再用活性炭吸附回收已溶解的金:炭浸法是一边浸出矿石中的金一边用活性炭吸附矿浆中已溶金。炭浆法和炭浸法虽然浸出原理相同，浸出方法相似，但两种工艺存在明显的差异。炭浆法的氰化浸出和发吸附分别进行，所以需分别配置单独的漫出和吸附设备，而且氰化浸出的时间比炭的吸附时间长得多，浸出和吸附的总时间长，基建和设备投资高，占用厂房面积大。炭汉法工艺是边漫出边吸附,浸出作业和吸附作业合二为一，使矿浆液相中的金含量始终维持在较低的水平上，有利于加速金的氰化浸出过程，因此炭浸工艺总的作业时间较短，生产周期较期，基建投资和广房面均较小。生产过程中带留的金银量较小，有利于企业资金周转。渣浆泵

Gold extraction method of precious metal by slurry pump

What type of ore is cyanidation? What are the commonly used cyanidation methods for gold extraction?

The method of leaching gold and silver from ore or concentrate with cyanide solution containing oxygen and recovering gold and silver from leaching solution is called cyanidation. The main factors affecting the oxidation leaching are the size and shape of gold particles, viscosity of ore pulp, impurity ions, etc., so the gold and silver ores suitable for the oxidation process should have the following characteristics: small gold particles, generally 1-7 μ m, but the gold particles are too small to be separated from the monomer; the ore contains less mud and is not easy to be muddy; pyrrhotite, arsenopyrite, bismuth pyroxene, metal minerals easy to form complex with oxides, which can be found in gold. The mineral content of the film formed on the surface is less.

The commonly used cyanidation methods are: percolation chlorination, agitation oxidation, carbon slurry, carbon leaching and heap leaching. What is cyanidation leaching?

Cyanide leaching, also known as cyanidation, is a method of extracting gold and silver from ore or concentrate with cyanide solution containing oxygen, and then recovering gold and silver from the leaching solution. Precious metal gold and silver are elements with stable chemical properties, which will not be dissolved in most of the solution, but can be resolved in cyanide solution, and the presence of air also affects the neonation leaching.

In the process of cyaniding, gold can be produced in a thin cyaniding solution in the presence of oxygen

The basic reactions can be divided into one-step reaction and two-step reaction.

What is percolation cyanidation? What is its process and characteristics?

Percolation cyanidation is a simple and easy method in cyanidation. Percolation cyanidation is carried out in the percolation leaching tank. The ore to be leached is filled with the leaching tank, and then the cyanide solution is added for leaching. The cyanide solution leaches through the ore layer to dissolve the gold. The gold containing solution (precious solution) leached through the percolation leaches through the false bottom (filter bottom) slightly higher than the bottom of the tank and flows out through the pipes on the tank wall. The discharge pipe of the precious liquid is located between the bottom of the tank and the bottom of the filter. After the ore is treated with cyanide solution, it is washed with clean water to wash out the gold containing solution remaining in the ore gap. The precious liquid is sent to the replacement sedimentation tank, and the zinc wire or zinc powder is used to replace the precipitated liquid. The lean liquid is supplemented with appropriate amount of oxide, which can be used to overflow the next batch of new ore. the ore washed with clear water is the percolation cyanide tailings. This method is widely used in small mines at home and abroad because of its simple equipment, low investment and quick effect. The pulp after solvent consumption, power saving and oxidation does not need to be concentrated or filtered. The percolation oxidation process usually deals with a 10 mm + 0.074 mm ore sand, coarser sand and other porous raw materials. It is forbidden to deal with raw materials containing clay, slime, excessively finely ground original families and ore particles with uneven size. If there are clay, slime and other fine slime materials in the ore, screening and desliming treatment should be carried out before cyanidation.

What is stirring cyanidation? What is its process and characteristics?

At present, agitation oxidation is a common cyanide leaching method. The ore pulp after grinding and classification enters the thickener for dehydration, and after concentration, it is sent to the agitation leaching tank, and an appropriate amount of cyanide solution is added to the leaching tank for leaching. The leached pulp is sent to the solid-liquid separation to separate the gold bearing solution from the cyanide tailing, which is the solid. The precious liquid is sent to the replacement precipitation operation, and zinc wire is used.

Or zinc powder to replace the precipitated gold. Then, further impurity removal is carried out. Cyanide tailing depends on the nature of raw ore, if it contains other polymetallic or pyrite, it will be comprehensively recovered. There are mechanical agitation leaching tank, air agitation leaching tank and air mechanical combined agitation leaching tank in the mixing equipment. This method is used to treat the gold bearing right with particle size less than 0.3mm. It has high mechanization degree, short leaching time and high leaching efficiency.

What is carbon slurry process (CIP and carbon diffusion process? Its process and characteristics and the difference between them?

The gold extraction process by carbon slurry method is based on the cyanide leaching of gold. Generally, it refers to the process that the univalent gold cyanide [Kau (CN) 2] is adsorbed by carbon after the cyanide leaching is completed. The carbon slurry method is mainly used in oxidized ore with high content of slime. It is difficult to obtain good technical and economic indexes for this kind of ore by conventional oxidation method because of the high content of slime and the difficulty of solid-liquid separation. The existing filters can not effectively separate the precious liquid and slag. The process of carbon slurry process is to crush and grind the gold bearing ore, then carry out cyanide leaching. After the pulp is fully leached, add active carbon to absorb the gold in the pulp. After cleaning and desorption, the gold bearing carbon can be divided into noble solution and desorption carbon with higher gold content.  Gold powder is produced by electrolysis of the precious liquid, and the gold powder is melted into gold ingot. After regeneration, desorption carbon is recycled in proportion in the new activated carbon.

The principle of carbon leaching method is similar to that of carbon slurry method.  Carbon leaching is a method that the activated carbon is put into the oxidation leaching tank, and cyanide leaching gold and carbon adsorption gold are carried out in the same tank.

The carbon pulp method is to leach the gold in the ore first, and then use the active carbon to absorb and recover the dissolved gold. The carbon pulp method is to leach the gold in the ore and use the active carbon to absorb the dissolved gold in the ore pulp at the same time. Although the principles and methods of the two processes are the same, there are obvious differences between them. Cyanidation leaching and hair adsorption of carbon slurry process are carried out respectively, so separate overflow and adsorption equipment are required. Moreover, cyanidation leaching time is much longer than carbon adsorption time, the total time of leaching and adsorption is long, capital construction and equipment investment are high, and the workshop area is large. The carbon Han process is a process of adsorption while overflowing. The leaching operation and adsorption operation are combined to keep the gold content in the pulp liquid phase at a low level, which is conducive to accelerating the cyanide leaching process of gold. Therefore, carbon leaching