Jaipur, India: Granite Rod Mill Sand Production Line for Railway Construction

36%

Processing Capacity

-12%

Energy Cost

-25%

Downtime

15 mo

ROI Period

The Challenge

The customer needed a granite sand production line capable of producing high-quality manufactured sand for railway and infrastructure construction. Railway projects require stricter sand quality than ordinary construction projects, especially in terms of particle shape, grading stability, and stone powder content. The original sand-making process could easily lead to poor finished particle shape and excessive stone powder, which would affect the quality of concrete aggregate and construction material performance. Therefore, the customer required a more suitable granite sand-making process that could improve finished sand quality and support stable production for high-standard railway construction.

Granite sand production for railway projects
Rod mill sand-making process design
Better particle shape and sand quality
Reduced stone powder content

Our Solution

Zhenggang Machinery optimized the granite sand production process by using a rod mill sand-making machine instead of a vertical shaft impact crusher. This process adjustment was selected according to the strict quality requirements of railway construction materials. The rod mill sand-making process helps improve finished sand particle shape, reduce excessive stone powder, and produce more uniform manufactured sand. Combined with feeding, crushing, screening, conveying, washing, and recovery equipment, the complete production line provides a reliable granite aggregate processing solution for railway, highway, concrete, and infrastructure projects.

Equipment Provided

Implementation Timeline

Site Assessment

2 weeks

Granite raw material, railway sand quality requirements, and site layout evaluation

Equipment Design

3 weeks

Rod mill sand-making process and granite aggregate production line configuration

Installation

5 weeks

Crusher, rod mill, screen, washer, conveyor, and recovery system installation

Training

1 week

Operator training for rod mill sand making, screening adjustment, and maintenance

The project was implemented through raw material evaluation, process comparison, equipment configuration, production line design, installation, commissioning, and operator training. Zhenggang Machinery selected the rod mill sand-making process according to the strict quality requirements of railway construction materials, helping the customer improve finished sand quality and reduce stone powder problems during granite sand production.

The Results

After process optimization, the granite sand production line achieved better finished sand quality for railway and infrastructure construction. The rod mill sand-making process improved particle shape, reduced excessive stone powder content, and made the finished sand more suitable for high-standard construction material requirements. The complete production line supported stable granite crushing, sand making, screening, washing, and material conveying, helping the customer produce more reliable manufactured sand for railway, highway, concrete, and large-scale infrastructure applications.

Before vs After Comparison

Metric	Before	After	Improvement
Finished Sand Shape Quality (%)	68	92	35
Stone Powder Content Index	100	62	-38
Railway Aggregate Suitability (%)	70	95	36
Equipment Downtime (%)	16	12	-25

Key Achievements

Optimized granite sand-making process

Replaced VSI process with rod mill sand making

Improved finished sand particle shape

Reduced excessive stone powder content

Met stricter railway aggregate requirements

Supported stable infrastructure sand production

Client Testimonial

“Zhenggang Machinery helped us improve the granite sand-making process for railway construction requirements. The rod mill sand-making solution produced better particle shape and reduced stone powder content, making the finished sand more suitable for high-standard infrastructure and concrete aggregate applications.”