I. Project Overview
Mr. Ding in Xiamen, Fujian, is primarily engaged in dry-mix mortar production. Recently, he faced quality instability issues in processing quartz sand raw materials. Quartz stone is hard and highly abrasive. Traditional crushing equipment either produced uneven output particle sizes or suffered from rapid hammer wear, making it difficult to consistently produce the fine aggregates required for dry-mix mortar. After evaluating multiple options, Mr. Ding ultimately chose the Huashengming 2PGT400×400 spring roll crusher to process quartz stone below 8mm, with a target output size of 1mm, to provide high-quality fine aggregates for dry-mix mortar production.
quartz stone crusher
II. Project Background & Selection Process
Dry-mix mortar has extremely strict requirements for aggregate particle size – overly coarse particles affect workability and construction performance, while overly fine particles increase production costs. Mr. Ding had previously tried various crushing equipment but struggled to find a balance between output and particle size. Impact crushers produced fluctuating output sizes with low screening pass rates; hammer crushers experienced excessively rapid hammer wear when processing quartz, requiring replacement almost every month – resulting in high spare parts costs and extended downtime that severely constrained production capacity.
After learning about the “low-speed compression” crushing principle of Huashengming roll crushers, Mr. Ding arranged for his technical team to conduct material testing. On-site testing confirmed that the equipment consistently produced output sizes around 1mm with well-shaped particles and low fines content – fully meeting dry-mix mortar production requirements. Based on the test results, Mr. Ding decided to adopt the Huashengming 2PGT400×400 spring roll crusher as the core processing equipment.
III. Equipment Configuration & Core Advantages
The core equipment of this production line is a 2PGT400×400 spring roll crusher, powered by two 7.5 kW motors for strong and stable operation. The equipment features a spring pressure system that flexibly adjusts crushing force based on quartz hardness, ensuring stable output size control at 1mm. Its core advantages include:
Precise and controllable output size: The spring pressure system allows flexible roll gap adjustment, maintaining stable output at 1mm to meet the strict fineness requirements of dry-mix mortar production.
Quartz Stone Crusher in Operation
Compression crushing, low over-crushing: The roll crusher replaces “high-speed impact” with “low-speed compression,” producing well-shaped particles with minimal fines – ideal for fine processing of hard materials like quartz. This characteristic is particularly important for dry-mix mortar – excessive fines affect water retention and bond strength, while well-graded particles improve workability.
Handles both dry and wet materials without clogging: The screenless design allows material to pass directly between the two rolls, eliminating clogging issues with moist materials. Quartz inevitably contains moisture during mining and stockpiling. Traditional equipment frequently shuts down for cleaning, while Huashengming roll crushers maintain continuous and stable operation, effectively ensuring production line availability.
Wear-resistant and durable, low operating costs: The core roller shells are made of high-wear-resistant manganese steel, offering long service life and eliminating the need for frequent wear part replacements. Compared to traditional impact crushers, this significantly reduces spare parts procurement costs and maintenance downtime – delivering clear advantages in overall operating costs.
IV. Project Results
After commissioning, the production line achieved stable output gradation and met fineness requirements. The Huashengming 2PGT400×400 spring roll crusher, with its precise particle size control and reliable performance, provides an ideal raw material processing solution for dry-mix mortar production. The customer reported stable equipment operation, product quality meeting expectations, and significantly improved production efficiency. Following successful commissioning, the customer has moved into full-scale production. According to customer feedback, the dry-mix mortar product qualification rate has significantly improved, customer complaint rates have noticeably decreased, and product market competitiveness has been enhanced.
Huashengming offers customized roll crushing solutions for different material characteristics. We welcome you to bring your material for a trial run – see the results on-site before you decide
