About more than 170 kinds of industrial value nature and distribution of copper-containing minerals have been found to vary. Common copper minerals of industrial value are roughly classified into 15 kinds of natural copper, chalcopyrite, copper blue, porphyrite, azurite, azurite, and malachite. There are many kinds of copper minerals, the occurrence state is complicated, the resources are getting poorer, finer and more complicated. In recent years, the research of copper ore process mineralogy has attracted more and more attention. The results of the mineralogical Unearthed Tangdan process indicates that the copper Oxide ore and oxidation of a high rate, disseminated fine grain size, malachite "color transfectants" ubiquitous, chrysocolla and arsenic acid copper "color transfectants" Partially existed, oxidized and decomposed of copper sulfide, severe ore weathering, and large amount of mud in the ore, which made sorting difficult. Using the new technology of “ultrafine grinding and ultra-fine flotationâ€, good test indicators have been obtained. Yang Lei's research on a low-grade copper oxide ore found that the ore has many kinds of copper minerals, complex embedding and fine grain size; single ore dressing process is difficult to return to the red copper ore, black copper ore, blue copper ore; wet leaching is difficult to recover yellow Copper sulfide minerals such as copper ore, copper ore, and copper ore can only be fully recovered from the ore by a joint process. Xiong Wei studied the ore properties of the drip copper ore. The results show that the ore belongs to the copper-bearing volcanic tuff with a large number of voids; the main copper mineral is a cuprous ore which is a cuprous oxide mineral and is not easily vulcanized; the fineness of grinding is -0.074 When mm is 90%, the ore content of -0.02mm in the ore reaches 65.59%, which seriously deteriorates the flotation process; -0.02mm slime has an extremely developed specific surface, resulting in a large consumption of chemicals. Zhu Yuefeng's research on a porphyry copper sulfide ore in western Yunnan shows that the ore is a collection of aggregates, and it is advisable to use coarse grinding and mixing tailing, fine grinding and fine grinding. Feng Zeping studied a low-grade copper- nickel ore containing talc , and used talc-copper-nickel and other floatable copper-nickel separation flotation-tailing to strengthen nickel recovery process, and obtained better sorting index. Deng Shanzhi conducted a study on a copper mine in Sichuan, and developed a mixed flotation concentrate suitable for the comprehensive recovery of the ore. A pressurized copper leaching slag flotation desulfurization, flotation tailings reverse flotation, magnetic separation and pickling The new process ultimately results in a comprehensive recovery of useful minerals. YANG Bing for Joe problem Tonglushan copper iron ore beneficiation indicators have worsened, the process carried out mineralogical studies, results showed that: the ore structure forms, replacement remnant serious, disseminated fine-grained, finely ground must be effective monomer dissociation; asynchronous The flotation process achieves the purpose of comprehensive recycling of useful minerals. As a large copper resource consumption country, China is limited by copper resources. Copper raw materials mainly depend on imports. For this reason, it is necessary to comprehensively recover copper, gold and other valuable elements in copper beneficiation tailings and copper smelting slag resources, but copper beneficiation tails Mine and copper smelting slag resources are secondary resources, and the ore is complex in nature. Through detailed process mineralogical research, it is possible to guide the determination of a reasonable process flow to achieve the goal of improving the sorting effect and improving the sorting index. Zhang Dailin conducted a process mineralogy study on a copper smelting converter slag. The combined oxidized copper and free copper oxide in the converter slag accounted for 19.52% of the total copper. Under the microscope, the metal copper and copper sulphide inlays were fine-grained, and about half of them. Metallic sodium and copper sulphide are embedded in the olivine and magnetite, making grinding and dissociation difficult. Therefore, further improving the fineness of the grinding can fully dissociate the fine-grained metallic copper and copper sulfide embedded in the olivine and magnetite; and by maximally recovering the free copper oxide by adjusting the slurry environment and adding an activator . Wu Jianhui conducted a process mineralogy study on copper smelting flash slag and Jin Jianwen on copper smelting slag. The results show that fine grinding is indispensable. At present, the deep discussion of the basic theory of process mineralogy is still relatively weak, especially in the basic research of crystal chemistry, mineral physics and quantum mineralogy, which leads to insufficient theoretical basis in the study of ore dressing process and element occurrence state. It is difficult to achieve the desired results.
Organic acids refer to some organic
compounds that are acidic. The most common organic acid is carboxylic acid
(R-COOH), which derives its acidity from carboxyl (-COOH). Sulfonic acid
(R-SO3H), sulfonic acid (R-SOOH), thiocyboxylic acid (R-SH) and so on are also
organic acids.
Organic acids include natural organic acids and synthetic organic acids. Natural organic acids are mainly extracted and isolated from plants or agricultural and sideline products in nature to obtain organic acids with certain physiological activity, while synthetic organic acids are organic acids obtained by chemical synthesis, enzyme catalysis and microbial fermentation. Natural organic acids are widely distributed in the leaves, roots and especially fruits of Chinese herbal medicines and fruits, such as wumei, schisandra, raspberry, etc., and citric acid, malic acid, tartaric acid and quinine acid are mostly in green plums. Common methods for synthesizing organic acids include the production of citric acid by aspergillus niger fermentation and the production of malic acid by immobilized cell technology.
Carboxylic Acid,Organic Acids, Acidic Organic Compound,Example For Organic Acid WUHAN RUISUNNY CHEMICAL CO. LTD , https://www.ruisunny-chem.com
Organic acids can be reacted with alcohols to form esters. Carboxylic acids are functional groups of carboxylic acids, which, in addition to formic acid (H-COOH), can be seen as derivatives of hydrogen atoms in hydrocarbon molecules that have been replaced by carboxyl groups. Can be expressed in the general formula (Ar) R-COOH. Carboxylic acids are often widely present in nature in the form of free states or in the form of salts and esters. The hydrogen atoms on the hydrocarbon group in the carboxylic acid molecule are substituted by other atoms or atomic groups of derivatives called substituted carboxylic acids. Important substituted carboxylic acids include halogenated acids, hydroxy acids, ketoacids and amino acids. Some of these compounds are involved in the metabolism of animals and plants, some are intermediate products of metabolism, some have significant biological activity, can prevent diseases and cure diseases, and some are raw materials for organic synthesis, industrial and agricultural production and pharmaceutical industry.
May 10, 2023