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Granite Processing Plant

Granite Processing Plant Design

According to the characteristics of the granite, the Granite Processing Plant design is designed to be four-stage crushing, that is, primary crushing, medium crushing, fine crushing, and sand making. The first crush is open circuit production, and the mud removal facility is reserved; the medium crushing, fine crushing and sand making and the matching screening workshop form a closed loop production process to meet the needs of concrete aggregates of various grade ratios.

1. Mining And Road Development

In combination with the actual situation of the mine, the mine development method adopts the development plan of on-site road development and automobile transportation. The total length of the highway trunk line is about 1800m, and the ore is transported to the unloading platform of the crushing workshop.

2, The First Stage Of Breaking And Breaking The Yard

The raw materials less than 800mm are transported by car to the unloading pit, and are transported by the vibrating feeder with the screening device; the material less than 150mm does not need to be broken, and falls directly onto the belt to enter the primary storage yard; the material larger than 150mm is crushed by the jaw. The machine breaks the discharge opening 150mm, and the broken material enters the primary storage yard.

3, Break The System And Screen

The medium-breaking system is relatively flexible in arrangement, and can be separated from the first-breaking system by the intermediate material library, and can be operated independently of each other. It can also be directly connected with the first-breaking system through the belt. Both arrangements have advantages and disadvantages.

The broken system in this project consists of a series of HP500 coarse cavity cones and a series of HP500 thin-cavity cones. It should be called two broken and three broken. The material can be filtered through a heavy-duty sieve before the second break, which can increase the output and reduce the power consumption. The medium breaking system and the vibrating screen system have a dust removing device.

The material of the primary yard of the project falls to the conveyor belt of the underground gallery through the vibrating feeder, and is sent to a double-layer heavy-duty vibrating screen for pre-screening through the belt conveyor. The material less than 31.5mm is directly screened out into the cone discharge belt, which is larger than 31.5mm of material enters a coarse-cavity cone crusher. After the crushing and sieving, the material above 31.5mm enters a fine-cavity cone crusher to be further crushed. The mixture after being crushed by two cone crushers enters two sets. The layer circular vibrating screen is sifted, and the material sieves of less than 31.5 mm are divided into three specifications of 0 to 5 mm, 5 to 13 mm, and 13 to 31.5 mm.

4, Gravel Storage

The three materials after the cone crushing and screening were transported through the belt into three 2500t round warehouses.

5, Gravel Distribution

The gravel is discharged from the bottom of the gravel storage tank through the arc valve into the belt and transported to two 300t gravel distribution warehouses, and loaded by the unloading device with the dust removal device.

6. Sand Screening And Stone Powder Sorting

The sand making equipment is arranged in 4 sets. The sand making raw materials are mainly composed of 0~13mm materials produced by the front cone crushing. Considering the sand making effect, a part of the materials of 13~31.5mm are appropriately added. The sorting device mainly uses the combined sorting machine. The content of stone powder in sand is controlled at about 5%. Due to the dry process, in order to reduce dust in the distribution and transportation, the sand needs to be sprayed during the loading process. The sand making system, the vibrating screen system and the sorting system have a dust removing device.

The sand-making raw materials are mainly mixed materials of 0 to 5 mm, 5 to 13 mm and parts of 13 to 31.5 mm. After being crushed into the sand making machine, they are transported by belt to enter the three-layer vibrating screen. The material of more than 5 mm is returned to the sand making machine and continues to be broken. As a finished stone, the rest of the material is divided into 3 to 5 mm and less than 3 mm. The material less than 3mm is transported into the classifier by the belt conveyor, and the stone powder and sand are sorted, and the sorted sand and the 3~5mm material pre-screened out are mixed into the finished sand.

7. Sand Storage And Distribution

The finished sand is transported by belt into two finished product warehouses, and the stone powder is transported into a 2500t powder store through the hoist. The finished sand is discharged from the bottom of the sand storage tank through the arc valve into the belt and transported to two 300t sand distribution warehouses. After the water treatment, the finished product is delivered to the factory. The stone powder is delivered to the factory through cement bulk equipment.

8, Electrical Control

The total installed capacity of the whole plant is 6500kW, all of which are 0.4kV equipment. The equipment is classified into 3 types of power load. In addition to the computer system and fire protection, the important equipment is equipped with UPS to ensure the safety of the equipment. The rest does not set the security power supply.

There are 1 10kV substation in the factory, 10/0.4kV in the comprehensive building and 2 sets of 2000kVA transformers, providing low-voltage electricity, primary crushing in medium crushing, sand making, storage, distribution and pump house, office building, etc. The workshop is equipped with 10/0.4kV and 630kVA transformers.

9, Industrial Tv Monitoring And Automation Control

Remote video monitoring of the production line, automatic centralized control can effectively guarantee the continuous operation of the production line, reduce the number of operators, achieve energy saving, cost saving, is the commonly used control method.

  • Granite Processing Plant

Customer's Background :

The customer first met us in the CTT, 2012 and had simple communication with us. After the fair, we warmly invited him come to our Shanghai head office and had deeply communication about the project. Finally we signed the contract by many rounds of talks. Eight months later, the production line start to run and no machine defects showed up during the acceptance tests.

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