The core objective of the iron tailings re-selection and recovery process is to further extract residual trace iron minerals (such as magnetite, hematite, and limonite) from tailings using single or combined physicochemical methods—such as magnetic separation, flotation, gravity separation, and roasting—to convert them into high-grade iron concentrates. Common iron tailings re-selection and recovery processes are mainly divided into the following four categories based on the characteristics of the tailings (such as mineral composition, dissemination particle size, and magnetic intensity): 1. Combined Weak Magnetic-Strong Magnetic Re-selection Process (Most Common) Suitable for mixed iron tailings containing both magnetite (strongly magnetic) and hematite/limonite (weakly magnetic). Weak Magnetic Separation Stage: Tailings slurry first passes through a low-intensity magnetic separator (such as a drum magnetic separator) to preferentially recover strongly magnetic minerals (magnetite, pseudo-hematite). Strong Magnetic Separation Stage: Tailings from the weak magnetic separation enter a high-gradient magnetic separator (such as a vertical ring pulsating high-gradient magnetic separator) to capture weakly magnetic hematite, limonite, and specularite, while discarding non-magnetic gangue (quartz, feldspar, etc.). 2. Combined Magnetic Separation-Flotation Re-selection Process Suitable for highly complex, difficult-to-select tailings with extremely fine dissemination particle sizes and high silicate impurity content (such as quartz and amphibole). Magnetic Separation Pre-concentration: Strong magnetic separation is used first to remove most coarse-grained, iron-free gangue, obtaining a rough concentrate and significantly reducing the volume of material entering the flotation stage. Reverse Flotation Cleaning: Cationic collectors (such as amines) or anionic collectors are added to…

【Process Introduction】 Flotation is the most common method for processing rock gold ores, especially sulfide-bearing ores with high floatability. It efficiently enriches gold in sulfide minerals, while tailings can be directly discarded, resulting in low cost. About 80% of rock gold ores in China use this process. 【Application Fields】 Suitable for fine-grained, highly floatable sulfide-bearing quartz vein gold ores, polymetallic gold sulfide ores, and carbonaceous (graphite) ores. 【Process Flow】 Typically a single-stage grinding-flotation circuit is used. For ores with uneven dissemination, stage grinding and flotation can be applied. Grinding Fineness: Gold in sulfides requires only sulfide liberation; gold intergrown with gangue requires full liberation. Fineness is determined by testing. Pulp Density: Coarse, high-density particles → thicker pulp; fine, low-density particles → thinner pulp. Roughing uses thicker pulp for higher recovery; cleaning uses thinner pulp for better concentrate grade. 【Other Conditions】 Include pulp density, reagent dosage, aeration rate, flotation time, etc., determined by testing. Common reagents: collectors, activators, and frothers.

Mine tailing are substances left after separating the valuable part of ore from the uneconomic part. Tailings are the unmined treasures. How to retreat tailing treatment , maximum benefit? What’re tailings? Tailing are different from overburden, waste rock or other substances that cover ore or ore body and are replaced without treatment during mining. The tailing processing methods are varied by minerals, beneficiation methods, particle size, etc. Tailing can be divided into the following types: hand-picking tailing, gravity separation tailing, magnetic separation tailing, flotation tailing, chemical beneficiation tailing, electrification tailing. Why should we carry out the tailings treatment process? Usually, the ore tailing is stored in the tailing dam. The remaining toxic chemicals, wastewater and heavy metal ions in the beneficiation process will not only cause pollution and ecological damage to the surrounding environment but also increase the potential safety hazard of the tailing dam, may induce landslides, mudslides, tailing dam breaks, and other accidents, so tailing treatment has been highly valued.

Mining vibrating screen generally appears in the production line of mining plant. The screening type is large ore material, which plays an important role in coal mine, quarry and metal mine production. So how to choose mining vibrating screen？ The selection of model is to select a regular manufacturer. The parts used on it benefit from standardization and serialization. In case of problems in production, the damaged parts can be replaced directly to ensure normal and orderly production. When selecting the mining vibrating screen, choose the model to be repaired or the manufacturer to be trusted. Mining vibrating screen is generally used outdoors, with a large amount of materials to be processed, and the production environment is easy to cause various problems in the equipment. Therefore, selecting a good manufacturer and mining vibrating screen that is relatively easy to repair can save time and cost. Quality is important. If you choose a good manufacturer, all problems can be solved. Select a qualified vibrating screen to ensure its stability in production. The mining vibrating screen purchased without cost saving may bring you greater trouble.

The artificial sand making plant mainly uses a series of stone crushing equipment to crush the stone and produce artificial sand and stone such as sand and aggregate. The equipment configuration of artificial sand making plant includes vibrating feeder, coarse crusher, medium and fine crusher, vibrating screen, sand making machine, belt conveyor. Among them, feeders, vibrating screens and conveyors are auxiliary equipment. artificial sand production plant 1. Feed  The stones blasted from the mountain are sent to the vibrating feeder through the dump truck. Vibrating feeder has strong adaptability, stable operation and high cost performance. It is a feeding equipment widely used in sand and gravel enterprises. The vibrating feeder can feed the crushing equipment continuously and evenly, effectively prolonging the service life of the equipment. Small volume, light weight, small power, compact structure, convenient installation, low operation cost and low investment cost. 2. Coarse and Fine Crushing  According to different crushing purposes, crushers are divided into coarse crushing and medium fine crushing: coarse crushers can process large stones to medium particle size at one time; The medium and fine crusher is mainly used to further crush and reshape the coarse crushed stone to meet the high standard requirements of construction projects for stone. The vibrating feeder evenly sends the stones to the jaw crusher, and the broken stones from the jaw are broken for the first crushing, that is, coarse crushing. The stones broken from the jaw are then…

Recently, the machine-made sand processing production line with an annual output of 600,000 tons built by jiema Heavy Industry was successfully tested in Indonesia. The project focuses on the production of construction aggregates. During the test run, the equipment ran stably and the customer was very satisfied. indonesia sand washing plant Raw materials: river sand, pebbles Annual production: 600,000 tons of machine-made sand Treatment process: front-end sand washing, back-end sewage treatment Equipment configuration: three-axis horizontal screen, two-wheel sand washing and recycling machine, muddy water treatment system Usage of finished materials: can be used for infrastructure construction and high-standard sand needs The equipment of this sand production line 1. Three-axis horizontal screen This production line adopts the latest three-axis horizontal screen developed and produced by jiema, which has the advantages of horizontal linear vibrating screen and circular vibrating screen. With its sturdy structure and large processing capacity, it is an ideal new screening equipment. 2. Two-wheel sand washing and recycling machine The two-wheel sand washing and recycling integrated machine can effectively reduce the mud and powder content of sand and gravel. It can produce finished materials with good grain shape and reasonable gradation to meet the local demand for high-quality sand and gravel materials. 3. Muddy water treatment system The muddy water produced by this production line is concentrated and precipitated by the thickener, and the clean water in the upper layer can be reused. The sediment at the bottom enters…

Silica sand for fracturing is made from natural silica sand through screening, processing, and purification, aiming to obtain petroleum proppants with particle size and impurity content that meet the requirements of the original ore. The following will discuss a series of solutions and processes, including the role of oil proppants, the processing technology of silica sand for fracturing, as well as process equipment and washing tail water treatment, to improve the quality of silica sand for oil fracturing. Petroleum proppant performance requirements 1. The proppant must have strong compressive strength and wear resistance to effectively support artificial fractures. 2. The density must meet the requirements and be easy to pump into the well, so the relative density must be low. 3. Under the condition of 200℃, it does not react chemically with other substances.