In 2016, a leading building materials company based in Luzhou, Sichuan, faced a critical challenge: it needed a high-performance crushing solution to produce 30 tons per hour of mortar sand with a particle size below 2mm—an essential raw material for local construction projects, including residential complexes and infrastructure upgrades. After evaluating its production needs, the company decided to launch a public tender specifically for a vertical shaft impact crusher (also known as a VSI crusher), a piece of equipment renowned for its ability to produce high-quality, cubical-shaped sand—ideal for mortar applications. The tender attracted 8 domestic manufacturers, all vying to supply their respective VSI crusher models. However, the Luzhou company set strict technical thresholds: the VSI crusher had to handle raw materials of 5-15mm in size (a common aggregate specification in Sichuan’s cobblestone-rich regions) and process high-density, high-hardness cobblestones—materials that can cause excessive wear and low output in ordinary crushing equipment. This requirement raised the bar, as many competitors’ vertical shaft impact crusher designs struggled to balance efficiency and durability when processing such hard materials.

Among the 8 bidders, Ninon’s VSI crusher emerged as the only solution fully meeting the Luzhou company’s technical requirements—thanks to two core innovations: the latest multi-collision technology and a newly upgraded rotor design. Unlike traditional VSI crusher models that rely on single-impact crushing (which often leads to uneven particle sizes and high powder content), Ninon’s vertical shaft impact crusher uses multi-collision technology: materials enter the crushing chamber and undergo repeated impacts with the rotor, impact plates, and other material particles, ensuring uniform crushing to below 2mm without over-grinding. The new rotor technology further enhanced performance: the rotor’s optimized structure (with thicker wear-resistant alloy plates and a balanced weight distribution) reduced vibration during operation, extending the service life of the VSI crusher and enabling it to handle high-hardness cobblestones without frequent maintenance. During the tender demonstration, Ninon’s technical team presented test data showing that its vertical shaft impact crusher could process 5-15mm cobblestones at a stable rate, with over 95% of the output meeting the 2mm mortar sand standard—far exceeding the reliability of other competitors’ vertical shaft impact crusher proposals. This performance, combined with Ninon’s after-sales service commitment (including on-site installation guidance and 1-year wear part replacement), secured the bid for the company.

In mid-July 2016, Ninon’s technical team arrived in Luzhou to complete the installation and commissioning of the vertical shaft impact crusher. The on-site setup was meticulous: the team first calibrated the VSI crusher’s feed rate to match the 5-15mm raw material supply, then adjusted the rotor speed (optimized for cobblestones) and fine-tuned the discharge port to ensure precise control of the 2mm particle size. When trial production began, the results exceeded all expectations: the vertical shaft impact crusher (powered by a 250KW motor) achieved an output of 37 tons per hour of mortar sand below 2mm—surpassing the Luzhou company’s 30-ton target by 23%. What made this achievement even more remarkable was the consistency of the output: over a 72-hour continuous trial run, the VSI crusher maintained a stable production rate, with the mortar sand’s particle shape (high cubical content) and impurity levels (below 0.5%) meeting the highest industry standards for construction mortar. This performance set a new industry record for vertical shaft impact crusher applications in high-difficulty sand production—specifically for processing high-hardness cobblestones into fine mortar sand. The Luzhou company’s production manager noted that the VSI crusher had not only increased their mortar sand output but also reduced production costs: the low wear rate of the rotor and impact plates meant fewer part replacements, while the high efficiency of the vertical shaft impact crusher cut energy consumption per ton of sand by 15% compared to their previous crushing equipment.

The successful commissioning of this vertical shaft impact crusher in Luzhou marked a significant milestone for Ninon in Sichuan’s building materials market. Sichuan, known for its abundant cobblestone resources, has a high demand for VSI crusher equipment that can convert local aggregates into high-quality sand—especially as the province’s construction industry expands. Ninon’s vertical shaft impact crusher demonstrated that it could address the unique challenges of Sichuan’s raw materials (high hardness, specific particle size requirements) while delivering superior efficiency. Following the Luzhou project, several other building materials companies in Chengdu, Mianyang, and Nanchong reached out to Ninon to inquire about its VSI crusher models, citing the Luzhou project’s record-breaking performance as a key factor in their interest. For Ninon, this project not only validated the technical advantages of its VSI crusher but also established a benchmark for VSI crusher applications in southwest China—proving that advanced crushing technology can turn regional raw material challenges into opportunities for enhanced production efficiency.