Tag Archives: vibrating screens

GN Linear Vibrating Screen for Domestic Core Drilling Fluids Cleaning

As long as the equipment is used for projects which involve separating works, there are something in common. For example, the drilling projects need to treat the slurry by removing the particles, and for mining projects there are vibrating screens used for collect certain particles with correct sizes. As a leading manufacturer and solution provider in separating works, GN Separation is able to suggest clients the most suitable equipment or system.

Just recently, GN Separation has finished the manufacturing for a vibrating screen system for a core drilling fluid cleaning project in domestic China. And the main equipment is a linear motion vibrating screen which was designed for mining. This machine, together with some other equipment, were used for core drilling fluids cleaning, including following:

1. Mining vibrating screen GNLMP 1224. It is a self-designed equipment with screen size nearly 3 square meters. GN has an advanced facility with cutting, welding and painting procedures. All side walls of the vibrating screen is made of a whole plates without any welding in order to ensure the strength. All screens are screen panels made of polyurethane and service life is longer than 6 months.

2. Customized mud gas separator. It is originally an equipment used in oil and gas drilling, for removing the gas from the drilling fluids. In fact, in other drilling works, there is some gas in the fluids shall be removed. This equipment is customized based on oil and gas mud gas separator, suitable for the core drilling.

3. Centrifugal pump GNSB6X5j-370c and collection tank. Centrifugal pump is anther core product of GN Separation for different applications. Also, GN has other pumps and conveyors available.

For more technical information or commercial information, welcome to contact GN team freely or visit GN factory.

Welcome to Visit GN Booth at CIME 2023 Mining Exhibition

In this hot July, there will be an international mining exhibition to be held in Shenyang City, the largest city in Northeast China. The full name of this Exhibition is CIME 2023, the 3rd Sino-foreign Mining Industry Chain Development Forum, which will be held from July 27th to 29th in Shenyang International Exhibition Center.

GN Separation will attend this exhibition, brining GN Vibrating Machines and other equipment used for mining industry.

About GN Separation: GN Separation is sister company of GN Solids Control, a leading brand in oil and gas solids control industry, which is exporting its products to 80+ countries in the world. GN Solids Control is mainly focusing on the drilling fluids solids control and waste management equipment and systems, while GN Separation covers other industries like mining, water treatment, food and beverage industry. Mining Vibrating Screens and Decanter Centrifuge are quite popular products for GN clients from mining industry.

For this CIME 2023, GN Separation will bring following equipment:

1. Stack vibrating screens. Stack vibrating screens are designed by GN team for wet screening, classification and dehydration of fine grained materials in mineral processing, coal preparation and etc. Two or more screen decks are stacked together, with same deck size and openings. The input material will be divided to each deck evenly and the output will be collected together. There is only one energy source for all decks. This design maximizes the usage of both the vibrating motors and the limited room.

2. Dewatering vibrating screen. Dewatering vibrating screen and classification vibrating screen are two kinds of GN middle sized vibrating screens. Their barriers are not so huge between the two kinds of screens. In fact, some clients are using classification vibrating screens for dewatering applications. But GN dewatering screen is more efficient with a slight modification.

3. Screen panels and screen meshes. The screen panels on the dewatering screen and screen meshes on stack vibrating screens are both manufactured by GN Separation. GN vibrating screen panels are polyurethane covered while GN vibrating screen meshes are fully polyurethane.

Welcome to meet GN team at GN Booth BT05 in Hall E3, from July 27th to 29th.

GN Separation will attend 27th Mining World Russia Expo in April

In the coming April, the 27th Mining World Russia will be held in Moscow. GN Separation will attend this fair, brining GN Mining Vibrating Screen and polyurethane screen panels.

Mining vibrating screens can be regarded as a large group, including several different types. Dividing by size, there are small models, middle size models, and large ones. Based on different structures, there are stack vibrating screens, linear motion vibrating screens and banana screens. Depending on the functions, there are vibrating screens for classification, for beneficiation, for dewatering and etc.

This time, GN Separation will bring to the exhibition a stack vibrating screens and screen panels.

1. Stack vibrating screen’s structure:

Stack vibrating screen is a self-designed equipment of GN Separation. It is called stack, because it can be made with 2 to 5 layers, and the exact layer number depends on the job site requirement because each layer has the same screen size and equipped by exactly same screen opening sizes.

2． Features of stack vibrating screens:

The material will enter each layer equally and to be separated at same time and to be discharged under same condition. And the products after separation are collected together. In this way, the separating capacity is doubled, tripled and even quadrupled in a limited space. It is also economic to use a stack shaker when considering the consumption of energy, cause all those screen layers are sharing 2 sets if vibrating motors.

3. Function of stack vibrating screens:

in fact, all mining vibrating screens are suitable for more than one function as the working principles are same. Stack vibrating screens are mostly used for wet separation, classification and fine grained material separation in a mineral processing.

Along with stack vibrating screens, GN Separation will also bring polyurethane screen panels to the exhibition.
Here is information about the exhibition:
Website：https://miningworld.ru/en/
Exhibition name：Mining World Russia
Schdule:：April 25-27th, 2023.
City：Moscow
Exhibition Center：Crocus Expo, Pavilion 1, halls 2, 3.

Separation Methods to be Used for Mining Beneficiation

The purpose of beneficiation is to separate the mining raw material into useful minerals and useless components.
In practice of mineral processing, some artificial methods are often used to enlarge differences in physical and chemical properties of minerals to help improve the separation efficiency. For example, to change the mineral magnetism by magnetizing roasting, to treat the surface of mineral is treated with acid and salt to selectively change the conductivity of some mineral, to change the natural wettability of minerals under help of various flotation reagents Besides above mentioned methords, the shape, particle size, hardness and color of minerals are also used as some special beneficiation standards.

Gloss is also often the basis for some special mineral processing methods. According to different ore types and requirements for beneficiation products, different beneficiation methods can be adopted in practice. Common mineral processing methods include gravity separation, magnetic separation, electric separation and flotation. The flotation method is the most widely used. Gravity separation method is widely used in the separation of black, non-ferrous, rare metals and coal; The magnetic separation method is mainly used for the separation of ferrous metals and rare metals. It can also be used to remove iron impurities from non-metallic mineral raw materials. It can also be used to purify production water, domestic water and the recovery of magnetite from heavy medium coal preparation; The electric separation method is used for the separation of nonferrous metal ores, rare metal ores, ferrous metal (iron, manganese, chromium) ores, and non-metallic ores (such as coal powder, diamond, graphite, asbestos, kaolin, talc, etc.).
Vibrating screens are widely used in different mining procedures including the preparation of mining rocks and the tailing treatment.
If you need more information, welcome to contact GN Separation directly at renee@gnseparation.com.

Functions of Vibrating Screens in Mining Beneficiation

When talking about the function of vibrating screens in mining industry, we cannot bypass the beneficiation. As is known to all, useful minerals and useless gangue are usually coexisting with each other. People have to do something to separate them from each other, for example, the . procedure of crushing ores, then enriching useful minerals and discarding useless gangue. All these procedures are include in the topic of beneficiation. For example, for coal, the process of separating coal from grinding stone to obtain products of different quality is called coal preparation.

GN Vibrating Screens

In nature, except a few minerals which are liquid (such as mercury), most of them are in solid type. Solid minerals have certain crystal structure and physical and chemical properties. In raw ore or coal, the separation of useful components and useless gangue or grindstone through beneficiation is basically based on the differences in physical properties, surface physicochemical properties and chemical properties of minerals. Mineral properties directly related to mineral processing mainly include density, magnetism, conductivity, wettability, etc.

1. Density refers to the mass of mineral per unit volume, which is the basis for gravity concentration.
2. The magnetism of a mineral is the property that it is attracted or repelled by a magnet. General minerals can be divided into strong magnetic minerals (such as magnetite, etc.), weak magnetic minerals (such as hematite, etc.) and non-magnetic minerals (such as diamond, hematite, etc.). Mineral magnetism is the basis of magnetic separation.
3. Electrical conductivity refers to the electrical conductivity of minerals. Generally, minerals can be divided into good conductors, semiconductors and non-conductors, which are the basis for electrical separation.
4. Wettability refers to the property that minerals can be wetted by water. The minerals easily wetted by water are called hydrophilic minerals (such as quartz, calcite, etc.); On the contrary, it is called hydrophobic mineral (such as chalcocite, graphite, etc.). The natural wettability of minerals mainly depends on the crystalline structure of minerals.

Function of mining vibrating screens are working based on the physical properties of minerals.