For example, malachite-bearing copper ore can be leached with dilute sulfuric acid. During leaching, malachite is converted into a copper sulfate solution. Copper metal can then be recovered from the solution by cementation, in which iron filings replace copper ions to produce metallic copper, commonly known as sponge copper.<\/p>\n
Chemical beneficiation is particularly effective for processing low-grade, fine-grained, complex, and refractory mineral resources that are difficult to treat using conventional physical beneficiation methods. It can improve resource utilization, recover valuable components from previously uneconomic materials, and contribute to the treatment and utilization of waste streams such as wastewater and waste residues.<\/p>\n
A typical chemical beneficiation process consists of six major operations:<\/strong><\/p>\n The specific process configuration depends on the mineral composition, the properties of the valuable components, and the required product quality.<\/p>\n <\/p>\n A beneficia\u00e7\u00e3o qu\u00edmica tem diferentes opera\u00e7\u00f5es de acordo com diferentes processos tecnol\u00f3gicos. Um processo t\u00edpico de beneficia\u00e7\u00e3o qu\u00edmica inclui geralmente as seis opera\u00e7\u00f5es prim\u00e1rias seguintes.<\/p>\n <\/p>\n <\/p>\n Esta opera\u00e7\u00e3o \u00e9 a mesma que o m\u00e9todo de beneficia\u00e7\u00e3o f\u00edsica, incluindo tritura\u00e7\u00e3o e peneira\u00e7\u00e3o de materiais, moagem e classifica\u00e7\u00e3o, mistura de ingredientes e outros processos de processamento mec\u00e2nico.<\/strong> The purpose is to grind the material to a specific particle size, prepare suitable fineness and concentration for the next operation, and sometimes use physical beneficiation to remove some harmful impurities or enrich the target minerals in advance so that the mineral raw materials and chemical reagents are mixed well. If the fire method is used, sometimes the material must be dried or sintered to create favorable conditions for the next operation.<\/p>\n The purpose of roasting is to change the chemical composition of the ore or remove harmful impurities so that we can transform the target mineral (component) into a form that is easy to leach or beneficial to physical beneficiation and prepare conditions for the next operation. The roasted products include calcined sand, dry dust, wet dust collection liquid, and mud, from which corresponding methods can recover functional components according to their composition and properties.<\/p>\n Esta opera\u00e7\u00e3o consiste em dissolver seletivamente os componentes funcionais ou os componentes de impureza no solvente de lixivia\u00e7\u00e3o, de acordo com as propriedades das mat\u00e9rias-primas e os requisitos do processo, de modo a que os componentes valiosos sejam separados dos componentes de impureza, ou os componentes funcionais sejam separados, que \u00e9 o passo seguinte. Criar condi\u00e7\u00f5es para a recupera\u00e7\u00e3o de componentes \u00fateis da solu\u00e7\u00e3o de lixivia\u00e7\u00e3o ou do res\u00edduo de lixivia\u00e7\u00e3o.<\/p>\n This is the same as the dehydration operation of physical beneficiation products, but the solid-liquid separation of chemical beneficiation leached pulp is more complicated. Generally, sedimentation, filtration, and classification are used to process leached ore pulp to obtain a clarified solution or contain a small number of fine mineral particles.<\/p>\n To obtain high-grade chemical concentrates, the leaching solution is often purified and separated by chemical precipitation, ion exchange, or solvent extraction to remove impurities and obtain a purified solution with a high content of valuable components.<\/p>\n Chemical concentrates are obtained by extracting valuable metals (components) from the leaching solution. Generally, chemical precipitation, metal replacement, electrowinning, carbon adsorption, ion exchange, or solvent extraction can be used; in some cases, physical beneficiation can also be used. The principal process of typical chemical beneficiation is as follows.<\/p>\n <\/p>\n <\/p>\n Tem utilizado com sucesso a beneficia\u00e7\u00e3o qu\u00edmica para processar muitos minerais met\u00e1licos e mat\u00e9rias-primas minerais n\u00e3o met\u00e1licas, tais como ferro<\/a>, mangan\u00eas<\/a>, chumbo, cobre<\/a>, zinco, tungst\u00e9nio<\/a>alum\u00ednio, estanho, ouro<\/a>, prata<\/a>t\u00e2ntalo, ni\u00f3bio, cobalto, n\u00edquel<\/a>O processo de extra\u00e7\u00e3o de min\u00e9rio de ferro, ur\u00e2nio, t\u00f3rio, terras raras, alum\u00ednio, f\u00f3sforo, grafite, diamante, caulim e outras mat\u00e9rias-primas minerais s\u00f3lidas. Tamb\u00e9m pode extrair componentes valiosos da \u00e1gua de minas, \u00e1guas residuais e \u00e1gua do mar.<\/p>\n The processing object of characteristic chemical beneficiation is the same as that of physical beneficiation. Still, the adaptability of the chemical beneficiation method is stronger than that of the physical beneficiation method, and its separation principle and product form are different from physical beneficiation. The separation principle of chemical beneficiation is similar to the traditional metallurgical process. Chemical beneficiation and the metallurgical process both use the basic principles of inorganic chemistry, organic chemistry, physical chemistry, and chemical processes to solve their respective process problems. Mineral dressing is widely used in developing various refractory ferrous metals, non-ferrous metals, precious metals, and non-metallic mineral resources.<\/p>\n A aplica\u00e7\u00e3o da beneficia\u00e7\u00e3o qu\u00edmica \u00e9 um m\u00e9todo eficaz para lidar com mat\u00e9rias-primas minerais pobres, finas, diversas e outras mat\u00e9rias-primas minerais refract\u00e1rias e reciclar recursos minerais n\u00e3o utilizados. A sua efici\u00eancia de separa\u00e7\u00e3o \u00e9 superior \u00e0 da beneficia\u00e7\u00e3o f\u00edsica. No entanto, o processo de beneficia\u00e7\u00e3o qu\u00edmica consome muitos produtos qu\u00edmicos e os requisitos para os materiais de equipamento e a separa\u00e7\u00e3o s\u00f3lido-l\u00edquido s\u00e3o mais elevados do que os da beneficia\u00e7\u00e3o f\u00edsica. Por conseguinte, em condi\u00e7\u00f5es normais, deve utilizar os m\u00e9todos de beneficia\u00e7\u00e3o f\u00edsica existentes para processar, tanto quanto poss\u00edvel, as mat\u00e9rias-primas minerais.<\/p>\n Quando considerar a utiliza\u00e7\u00e3o de um processo de beneficia\u00e7\u00e3o qu\u00edmica?<\/strong><\/p>\n <\/p>\n Chemical beneficiation should generally be considered under the following conditions:\n
Processo de beneficiamento qu\u00edmico<\/h2>\n
![\"\"](\"https:\/\/www.jxscmachine.com\/wp-content\/uploads\/2023\/02\/Chemical-Beneficiation-Process.jpg\")
<\/a><\/h2>\n1. Preparatory Work<\/h3>\n
2. Roasting Operation<\/h3>\n
3. Leaching Operation<\/h3>\n
4. Solid-liquid Separation Operation<\/h3>\n
5. Purification Work<\/h3>\n
6. Production of Chemical Concentrates<\/h3>\n
<\/a><\/p>\n\n
When Should Chemical Beneficiation Be Considered?<\/h2>\n
\n1. Physical Beneficiation Alone Is Ineffective<\/strong>
\nWhen valuable minerals are extremely fine-grained, closely associated with gangue, disseminated, or chemically similar to the surrounding minerals, conventional physical beneficiation may not achieve satisfactory separation.
\n2. Physical Beneficiation Cannot Achieve Reasonable Technical and Economic Indicators
\n<\/strong>If physical beneficiation cannot provide acceptable recovery, concentrate grade, or economic performance, chemical treatment may provide an alternative or supplementary solution.
\n3. Valuable Components Occur in Complex or Refractory Forms<\/strong>
\nChemical beneficiation is particularly suitable when valuable components occur in forms that are difficult to recover through conventional gravity, magnetic, flotation, or other physical methods.<\/p>\n