What are the residual sand mines? What is the process?

In the field of mining, residual sand ore is a mineral resource with great economic value and relatively easy to extract. It is like nature's carefully prepared "treasure", quietly buried not far from our feet. If you are looking for an efficient and low-cost mining investment project, an in-depth understanding of residual sand ore and its beneficiation process is the first step to success. This article will provide you with a comprehensive analysis of the types of residual sand ore and efficient recovery process.

First, what is the residual sand ore? What are its main types?

Residual sand ore, refers to the primary vein in the long geological era, after physical weathering (such as sun, rain, freezing, etc.) role of the disintegration of the broken, which is chemically stable, the density of the useful minerals in situ or near the formation of a slight accumulation of mineral deposits. To put it simply, "the stone is rotten, but the treasure is left behind".

These deposits are usually shallow, loose in structure and can be mined without blasting, so the investment cost is low and the result is quick. Its main types include:

1. Residual accumulation type rare earth sand ore:

   • Main minerals: monazite and cerium fluorocarbon rich in cerium, lanthanum, neodymium and other light rare earth elements.

   • Cause: formed by the weathering of granite and other rare earth-rich protoliths, is an important form of rare earth resources in the southern region of China.

2. Residual accumulation type ilmenite sand ore:

   • Main minerals: ilmenite, rutile, white titanium stone.

   • Cause: formed by the weathering of titanium-containing basaltic rocks (such as basalt), which is one of the main sources of titanium metal.

3. Residual deposits of tungsten and tin alluvial ores:

   • Main minerals: wolframite, cassiterite.

   • Cause: Produced in the upper weathering shell of primary tungsten-tin ore veins, commonly found in tungsten-tin mining areas such as Jiangxi and Hunan.

4. Residual accumulation type gold alluvial ore:

   • Main mineral: natural gold.

   • Cause: After weathering of gold-bearing quartz veins, gold particles are chemically stable and dense, and are enriched in situ to form "iron cap" type gold ore.

5. Residual Gemstone Alluvial Ore:

   • Main minerals: diamonds, sapphires, garnets, etc.

   • Cause: After the weathering of primary Kimberlite rock barrels or other gemstone protoliths, gemstone crystals are accumulated in situ.

Second, what is the standardized process flow of residual alluvial ores?

The core of the processing of residual alluvial ores lies in the "Dissociation-Screening-Gravity Separation", which is a scientifically designed and highly efficient process that maximizes the recovery of valuable minerals. A set of standard process flow is as follows:

Step 1: Raw material preparation and washing

• Process: Use excavator or forklift to feed raw ore into the silo, and feed it evenly into the washing machine through the trough feeder.

• Purpose: Remove the dirt, clay and other impurities in the ore, so that the useful minerals are fully dissociated and exposed, in preparation for the subsequent sorting. This is the basis for ensuring the sorting effect.

The second step: screening and grading

• Process: The cleaned material enters the vibrating screen and is divided into different grain sizes. The oversized waste rock is screened out, and the qualified materials enter the next step.

• Purpose: To realize the "can throw early throw", discard the useless coarse grains of waste rock in advance, reduce the burden of subsequent equipment, improve processing efficiency.

The third step: core gravity sorting
This is the "heart" of the whole process, according to the density difference of different minerals for efficient separation.

• Jig separator: For coarse and medium size (-10mm) minerals, such as tungsten and tin ore, gold, jig utilizes the pulse effect of water flow to make heavy minerals settle to the bottom and light pulsates separate from the top, with remarkable sorting effect.

• Spiral chute/shaking table sorting: For fine-grained (-2mm) minerals, such as ilmenite and rare earth ores, the spiral chute utilizes centrifugal force and water flow film to carry out primary sorting, while the shaking table realizes fine sorting through the reciprocating movement of the bed surface, which can obtain high-grade concentrates.

Step 4: Dewatering and Tailings Treatment

• Flow: The sorted concentrate is dewatered through dewatering screen or thickener to form a product with lower water content, which is easy to be transported and sold.

• Purpose: To realize the recycling of water resources and reduce production costs. At the same time, the tailings are standardized to ensure environmental protection.

The advantages of the whole process are summarized:

• Small investment, quick return: compact equipment configuration, short process flow.

• High-efficiency recovery: highly targeted, heavy mineral recovery rate can reach more than 90%.

• Environmental protection and energy saving: adopting circulating water system, low dust pollution.

• High degree of automation: easy operation, low labor cost.

Choose professional us to escort your residual sand mine project!

The development potential of residual sand mine is huge, but the key to success lies in choosing experienced and skillful partners. Our company has been deeply engaged in mining machinery manufacturing and total solution of processing plant for decades, providing you with:

• Free mineral analysis service: assay minerals for you to determine their composition and value.

• Professional process design: according to the characteristics of your ore samples, customize the most efficient and economical beneficiation program.

• Full set of equipment supply and installation: provide a full set of high quality equipment from feeding, crushing, screening to gravity separation and dewatering.

• Perfect after-sales and technical support: send engineers to guide the installation and debugging on site until the production line runs stably.

Contact us now for a free mineral processing program and quotation! Let your residual alluvial resources be truly transformed into visible wealth!