Contact NowManganese Ore Processing Plant1. Manganese ore is an important raw material in steel industry in China 2. Most of the manganese ore belongs to the fine or the micro granular disseminated in nature 3. The commonly processing methods: Washing, screening, gravity separation, magnetic separation,...Read More
Contact NowManganese Ore Gravity Processing PlantThis Manganese Ore Gravity Processing Plant is widely used in the processing of coal, non-ferrous metal, rare metal, precious metal ore, and it also used in the processing of asbestos, diamond and other non-metallic ore.Read More
Contact NowManganese Ore BeneficiationEquipments including: Main equipments: Jaw crusher, hammer crusher, vibrating screen, and drum magnetic separator. Auxiliary equipment: Belt conveyor, water pump.Read More
Contact NowManganese Processing PlantThere mainly have four kinds of separation method : (1) Flotation separation. (2) Gravity separation. (3) Leaching separation. (4) Magnetic separation.Read More
The traditional technologies based on gravitational and magnetic methods to beneficiate the raw materials are not always able to provide the required concentrates, due to different physical characteristics and composition of the raw materials. On the other hand, sensor-based technology can measure the electrical and physical characteristics of each individual lump of raw material such as
The feed lump material is fed into the receiving bin. It is accumulated there and fed by the feeder onto the vibrating table. The vibrating table forms a monolayer of the material and feeds it onto the belt of transport conveyer. The moving material on the conveyor is controlled; the parameters for separation of lumps are fixed and analyzed. By means of special software, the processor processes the data and generates a control signal for a pneumatic sorting device. The sorting device with its air jets beats away the lumps selected. Thus, two streams of material are formed: the gangue and the useful ones. The efficiency of this electronic separation is 97%.
The speed of the travelling belt is 2 metres per second. In the sensors, the travelling time & the location of the identified material are programmed and calculated in milli-seconds. The machine also senses the size of the material and depending on the size, 1 or 2-3 jets open-up to separate the material, by blowing the compressed air.
Commercial plants based on sensor-sorter technology have already been established for manganese ores & also for the recovery of silico manganese & ferro manganese from metallurgical slags of the submerged arc furnace.
Sensor sorter plant can use the lumps of 5-10 mm, 10-20 mm, 20-40 mm or 40-80 mm. Depending on the feed-stock fraction, the plant capacities range from 5 tons per hour to 42 tons per hour (based on the bulk density of 1.4 tons/m3).
Thus, sensor-sorter technology allows to accurately controlling the quality of dressed ore by dry methods of separation. Application of sensor-sorter technology enables to solve the different tasks, such as maximum recovery of the separated element, maintenance of the required ratio between the two elements and other optimization issues.
Manganese is a common metal mineral in nature. There are more than 150 kinds of manganese minerals found in nature so far, but only a small part of manganese ores with mining and utilization value are mainly pyrolusite, pyrolusite, biogas manganese ore, etc. According to the different processing methods, manganese ore can be roughly divided into five categories: manganese oxide ore, carbonate manganese ore, iron manganese ore, manganese iron ore and multi metal composite manganese ore. Due to the different types of ore deposits and ore properties, various manganese ore dressing process is also different. The following Fodamon engineers will introduce in detail the ore characteristics, beneficiation methods and equipment of these four types of manganese ores.
Beneficiation method of manganese oxide oreManganese oxide ore accounts for most of the available manganese ore. A large amount of slime is often produced in surface oxidized manganese ore, but it usually contains a lot of manganese minerals. Therefore, the treatment of manganese ore slime is also a very important aspect. On the basis of this classification, according to the manganese content and the difference of mineral disseminated particle size, it can be divided into massive disseminated rich manganese ore, small and granular disseminated poor manganese ore, and fine granular disseminated poor manganese ore.
Massive disseminated manganese rich oreThe manganese content in this kind of manganese ore is high, and the upper limit of particle size is between 40-75mm. Simple manganese ore dressing method can be used for separation, and high-grade manganese concentrate can be obtained by simple screening or gravity separation. Therefore, the commonly used manganese ore dressing methods include heavy medium beneficiation, jigging beneficiation, shaking table beneficiation, etc. The required equipment includes round vibrating screen, jig, shaker, etc.
Small and granular disseminated lean manganese oreThe manganese content in this kind of manganese ore is low, usually less than 30%, and the manganese mineral particle size is small, the mud content is large, and the treatment method is more complex. Due to the weak magnetism of manganese ore itself, the gravity magnetic flotation combined process is often used to recover the manganese ore at present, that is, part of the slime containing manganese minerals is selected through ore washing, and then the combined process of jigging gravity separation strong magnetic separation flotation is used to recover manganese minerals. The required equipment includes jig, magnetic separator, flotation machine, etc.
Fine granular disseminated lean manganese oreThe manganese content in this kind of manganese ore is generally less than 15%, and the particle size is very small and evenly distributed. It is difficult to use a single mechanical beneficiation method for recovery. Chemical leaching or combined process of mechanical beneficiation and chemical leaching is usually used.
Beneficiation method of carbonate manganese oreThe manganese minerals in carbonate manganese ore mainly exist in the form of manganese carbonate with fine disseminated particle size. Flotation is the main beneficiation method for this kind of manganese ore, but there are some problems such as high metal loss and high reagent consumption. Therefore, it is necessary to cooperate with high intensity magnetic separation or gravity separation in production. The required equipment is JJF flotation machine, SF flotation machine, magnetic separator and so on.
Beneficiation method of ferromanganese oreManganese is the main recovery metal in iron manganese ore, and the total content of manganese and iron is more than 30%. Compared with manganese oxide ore, iron manganese ore is more difficult to separate, and the difficulty lies in the separation of iron and manganese minerals. In production, the method of washing jigging gravity separation roasting magnetic separation can be used to recover iron concentrate and manganese concentrate. Manganese concentrate containing 5.4% iron and 46.3% manganese can be obtained, and the recovery rate can reach 75.5%. The required equipment includes drum washing machine, jig, magnetic separator, etc.
Beneficiation method of manganese bearing iron oreThe content of manganese in this kind of ore is low, only 5% 10%. At the same time, it has the characteristics of fine disseminated particle size and close symbiosis of iron and manganese minerals, so it is difficult to recover by mechanical beneficiation. The chemical leaching method is a common mineral processing method for this kind of manganese ore, and the recovery index is obviously better than the traditional mechanical separation method.
Mineral processing method of polymetallic composite manganese oreIn addition to manganese minerals, there are a certain amount of iron, lead, zinc, magnesium, aluminum, copper, silver and other metal minerals, mostly in the form of oxide ore. Manganese minerals are closely combined with silver, iron and other minerals, which are difficult to separate. For this kind of ore, high intensity magnetic separation, gravity separation, flotation and other mineral processing methods can be used. Firstly, the slime of manganese ore is separated by washing and sieving, and then other recoverable minerals are separated. The required equipment includes drum washing machine, linear vibrating screen, magnetic separator, XCF flotation machine, etc.
To sum up, we can find that due to the special nature of manganese ore, the slime also contains a lot of manganese minerals, and the slime is also an important part of manganese recovery. Therefore, it is necessary to pay more attention to the recovery of ore slime in order to ensure that the recovery rate of manganese ore can reach the expectation. It is suggested that the mine owner should consult the manufacturer with the overall qualification of the concentrator, select reasonable manganese ore dressing process flow through scientific beneficiation test report, and customize various manganese ore dressing equipment to ensure ideal recovery benefits.
Simple and effective beneficiation of low-grade manganese ore, manganese concentrate grade higher than 50%.Regenerating hydrochloric acid with cheap sulfuric acid, reducing process cost and alleviating problems of hydrochloric acid storage and transportation.Leaching agent can be regenerated and CaSO42H2O whiskers withhigh aspect ratio were obtained.
In order to economically utilize low-grade manganese ores in Indonesia, a process is proposed to produce high-grade manganese concentrate and prepare calcium sulfate whiskers. Low-grade manganese ore is beneficiated with hydrochloric acid as a leaching agent to obtain a manganese concentrate. Hydrochloric acid can then be regenerated using cheaper sulfuric acid via contact with the leach liquor (a CaCl2 solution), whereas calcium sulfate whiskers can also be precipitated during this regeneration. Herein, the effects of pH and reaction time on the leaching of manganese ore were evaluated, and the effects of reaction temperature, stirring speed, precipitation time, calcium ion concentration and sulfuric acid concentrate on the morphology of the calcium sulfate whiskers were experimentally investigated. The products were analyzed by means of scanning electron microscopy (SEM), thermogravimetric-differential scanning calorimetry (TG-DSC), and X-ray diffraction (XRD). The results show that control pH to 3 and leaching duration is 1.5h, the grade of manganese ore increases from 16.4% to more than 51.6%. The CaSO42H2O whiskers prepared have good crystallinity, uniform morphology, high aspect ratio and good reproducibility under the optimum conditions: 50C, stirring speed of 250 rmin1, precipitation time of 1h, calcium ion initial concentration of 30gL1, and sulfuric acid concentration is 30.8%. In addition, CaSO40.5H2O whiskers with high aspect ratio can also be prepared under atmospheric pressure. The phase transformation of CaSO42H2O is also studied. In low concentration hydrochloric acid (1molL1), the main product is CaSO42H2O. In high concentration hydrochloric acid (2.5molL1), when the reaction time is less than 2h, CaSO40.5H2O occurs only when the temperature reaches 102C. When the reaction time is not less than 8h, and the temperature is higher than 95C, CaSO4 is produced. A manganese concentrate (Mn, more than 51%) can be obtained via the regenerated hydrochloric acid leaching.