We are excited to announce our participation in the MBAM ONEBUILD Exhibition, scheduled from August 28 to August 30, 2024, at the Kuala Lumpur Convention Centre (KLCC). You can find us at Booth No. D07, where we will be showcasing our latest innovations in aggregate crushing machines and mining benefication plants.

Liming Heavy Industry will participate in the Mining Indonesia & Construction Indonesia 2024 exhibition, from September 11 to September 14, 2024, at the Jakarta International Expo, Kemayoran. This premier event is a key platform for showcasing the latest advancements and technologies in the mining and construction sectors.

At our booth, No. A2-2525, we will be highlighting our cutting-edge technology and equipment, including our new aggregate crushing machinery and advanced mining crushing and beneficiation systems. We have hundreds of aggregate crushing machines and benefication plants running in Indonesia now. We welcome you to our booth and discussing how we can support your projects.

Flotation, the process of separating minerals from their ores by attaching to gas bubbles, is the cornerstone of mineral processing and plays a pivotal role in industries ranging from mining to environmental remediation. Its effectiveness relies on a delicate balance of multiple factors, each of which helps separate valuable minerals from unwanted gangue. Let’s take a deep dive into the intricate world of flotation and explore the key factors that drive its efficiency.

Chemical Factors:

1. Collectors and Surfactants

Collectors are essential chemicals in flotation that help minerals attach to gas bubbles. These compounds, usually surfactants, have an affinity for specific minerals, allowing them to form a hydrophobic layer on the surface of the mineral. Common collectors include xanthates, dithiophosphates, and thiocarbamates, each tailored to specific minerals, enhancing their floatability.

2. Frothers

Frothers help create stable and persistent bubbles, which are essential for bringing hydrophobic mineral particles to the surface. By reducing the surface tension of the liquid phase, the frother ensures the formation of a froth layer that can hold mineral-rich bubbles, thus facilitating their separation from the gangue.

Physical factors:

1. Particle size

The size of the particles has a significant effect on flotation efficiency. Fine particles tend to have lower flotation rates due to the reduced probability of collision with bubbles. Controlling the particle size distribution in the feed is essential to optimize flotation performance.

2. Fluid dynamics

The fluid dynamic conditions within the flotation machine affect the efficiency of the process. Factors such as agitation, air flow rate and pulp density affect the transport of particles and bubbles, and thus the probability of collision and attachment.

The resource utilization of construction and demolition (C&D) waste is first to pretreat the construction waste to meet the requirements of recycling. A large amount of construction waste is pretreated mainly by mechanical sorting, supplemented by manual sorting. The pretreated construction waste can be directly recycled, or can be further processed and utilized as required.

The further process of construction waste is mainly finished by professional equipment, such as crushing and screening equipment.

At present, the widely used construction treatment process is as follows: raw material loading → primary crushing → manual sorting of impurities → automatic sorting of impurities → secondary crushing → screening and removal of impurities → finished aggregate.

After the recycling treatment of construction waste is completed, the amount of waste is reduced, and the harm of construction waste is eliminated to achieve harmless treatment.

On site crushing and sorting of construction waste

It refers to the use of demolished old construction waste and newly built construction waste generated in the process of urban and rural construction to realize on-site screening and crushing through relevant technology, so as to provide raw materials for on-site construction. On the one hand, it reduces the space for stacking garbage and the funds for garbage removal; on the other hand, it reduces the purchase of new materials, and further reduces the project cost.

At present, there are different forms of sand making in the field of machine-made sand, such as fixed sand making machines, mobile sand making machines, and VU system sand making machines.

All sand-making methods of Liming Heavy Industry adopt dry sand-making process. No water is used in the sand-making process, and it will not affect sand-making production in the water shortage environment.

Among them, the mobile sand making machine is a new type of sand making equipment developed on the basis of a fixed sand making machine. The main machine configuration is still impact crusher, but the sand making machine and vibrating screen are fixed on the vehicle-mounted system, and the whole body can move freely, no fixed installation, easy to change the production site at any time.

The host of the mobile sand making machine is the impact crusher. At present, Liming Heavy Industry produces VSI, VSI5X, and VSI6X series, which have a wide application foundation and good reputation in the field of machine-made sand. Later, mobile sand making machines and VU system sand making will be launched. It is also based on the good effect of impact crusher and sand making.

Different forms of sand making require different equipment, and their prices are very different. Therefore, the price of 80T/hour large-scale mobile dry sand making machine depends on the specific equipment configuration. You can leave detailed needs such as raw materials, capacity, feed size, output size to online customer service, and we will arrange technicians to make selection plans and quotation budgets for reference.

Gold occurs principally as a native metal, usually alloyed to a greater or lesser extent with silver, or sometimes with mercury. Native gold occur as sizeable nuggets, as fine grains or flakes in alluvial deposits, or as grains or microscopic particles embedded in other rocks.

Process flow：

1. Trucks transport the ore from open pits or underground operations to processing operations.

2. Determine the geochemical makeup of the ore, including its hardness, sulfur content, carbon content and other minerals found within, impact the cost and methods used to extract gold.

3. Sent gold ore into a series of crushers (jaw crusher, HPT hydraulic cone crusher, etc.) and grinding mills (MTW European version trapezium mill, vertical mill, ball mill, etc.) to reduce the size of the ore particles and expose the mineral.

4. Re-election is widely used in the rock gold mine, as an auxiliary craft, in the grinding process to recover coarse gold, and create favorable conditions to flotation and cyanidation processes, which can improve the beneficiation indicators, improve recovery rate of gold, re-election plays a positive role for increasing production and reduce cost.

5. Flotation process or a weak cyanide solution to the slurry, this process removes up to 93 percent of the gold and 70 percent of the silver from the ore. And then the gold is pulled from the solution and attaches to the carbon. We then "strip" the gold from the carbon by washing it with a caustic cyanide solution. The carbon is later recycled.

6. Next, we pump the gold-bearing solution through electro-winning cells, which extract metals from the solution using an electrical current.

7. Smelt the gold, which melts it in a furnace at about 2,100°F. From there, the liquid gold is poured into molds.

8. We finally send the bars to a refinery for further processing into pure gold.

Applications：

Gold has been widely used throughout the world as money, for efficient indirect exchange (versus barter), and to store wealth in hoards. For exchange purposes, mints produce standardized gold bullion coins, bars and other units of fixed weight and purity.