Typical configuration scheme of production line

Granite crushing and processing projects usually adopt three-stage crushing process:

Coarse crushing stage

A jaw crusher is configured as the first-stage crushing equipment to process raw materials below 600mm and crush them to 100-200mm. The PE series jaw crusher can adapt to the high hardness characteristics of granite with the wedge adjustment device.

Medium crushing stage

Cone crusher is recommended as the second-stage crushing, which can significantly reduce the consumption of wear-resistant parts compared with impact crusher. On a production line with an output of 500 tons per hour, a single HPT multi-cylinder hydraulic cone crusher can replace 4 traditional impact crushers, and the life of wear-resistant parts is increased by more than 3 times.

Sand making and shaping

VSI6X vertical shaft impact crusher completes the final crushing, and realizes the production of machine-made sand below 5mm through the "stone hitting stone" principle. The cubic content of the finished material is more than 95%, which meets the requirements of GB/T 14684 standard.

Supporting equipment includes:

Vibrating feeder (processing capacity 800t/h)

3YK3070 circular vibrating screen (4-layer screen design)

Pulse dust removal system (dust concentration ≤20mg/m³)

Central electric control system (PLC automatic control)

Investment cost composition

Take the 300 tons per hour production line as an example:

Project Amount (10,000 yuan) Proportion

Main equipment 480-550 65%

Civil engineering 120-150 18%

Electrical system 60-80 10%

Installation and commissioning 40-50 7%

Total 700-830 100%

Energy-saving design reduces power consumption by 30%, and the processing cost per ton is controlled at 9-12 yuan.

Calculation of return on investment (taking the eastern region as an example)

Basic data:

300 days of operation per year, 20 hours per day

Factory price of machine-made sand 80 yuan/ton

Stone 60 yuan/ton (1-2 melon seed slices)

Sand rate calculated at 40%

Annual income:

300t/h×20h×300d=1.8 million tons

Machine-made sand income: 1.8 million×40%×80=57.6 million yuan

Crushed stone income: 1.8 million×60%×60=64.8 million yuan

Total revenue: 122.4 million yuan

Operating costs:

Raw material cost: 30 yuan/ton × 1.8 million = 54 million yuan

Energy consumption cost: 15 degrees/ton × 1.2 yuan × 1.8 million = 3.24 million yuan

Manual maintenance: 2 million yuan

Total cost: 59.24 million yuan

Investment payback period:

(8.3 million yuan investment)/(122.4 million-59.24 million)≈4.2 months

The net profit in the first year can reach 63.16 million yuan, and the ROI exceeds 760%.

Risk control suggestions

Give priority to the "mining + processing" integrated project, which can reduce the cost of raw materials by 40%

Configure hydraulic cone crusher to replace traditional impact crusher, and save more than 2 million yuan per year on wear-resistant parts

Reserve 20% capacity buffer to deal with equipment maintenance

Obtain construction waste resource qualification and expand business channels

Under the current background of infrastructure investment recovery, a reasonably configured granite production line can recover all investment within 2 years, and the service life of the equipment can reach more than 10 years, with significant investment value. It is recommended to select equipment suppliers with EPC service capabilities, which can provide 15%-20% optimization space for the overall solution.