Miski梅奥, a subsidiary of the Mosaic Company — the world’s leading integrated producer and marketer of concentrated phosphate and potash, mines phosphoric rock at their Bayóvar 2 mine in the Sechura Desert of Peru. The material mined at Bayóvar provides high levels of phosphate and calcium that help correct soil acidity levels. These offer a high level of agricultural efficiency and are certified for organic cultivation. Miski梅奥’s phosphates are shipped all over the world, and they strive for their product to meet the highest quality and safety standards to achieve a strong relationship with their customers.
案例研究
挑战
Miski梅奥’s phosphate production process entails first extracting the phosphoric rock. After the ore is mined, Miski梅奥 treats it in a concentrator plant prior to drying and shipping. The concentrator plant consists of two production lines, 每个都包含, 在其他设备中, a 12’x50’ (3.6 m x 15.2米)麦克菠菜网最稳定正规平台_最全菠菜网大全旋转洗涤器.
麦克菠菜网最稳定正规平台_最全菠菜网大全旋转洗涤器 remove deleterious materials such as water-soluble clays and coatings from ore feeds. Through the continuous lifting and dropping action that takes place inside the drums, 材料自己打滚. The softer materials are broken down and dissolved into the solution of water added with the feed.
“The 菠菜网最稳定正规平台_最全菠菜网大全 drums fulfill an important function in our operation of degrading the material from larger diameter to smaller diameter to obtain a greater phosphate recovery,奈尔·莫雷诺说, 米斯基·梅奥的维修技术员.
The Rotary Scrubber drums turn via trunnion rollers supporting the cylinder ends, which are equipped with renewable steel tires. In 2018, the tires on the 旋转式洗涤塔 at Miski梅奥 reached their maximum wear limit and needed to be replaced. Miski梅奥 had no experience replacing these components, so they contacted 菠菜网最稳定正规平台_最全菠菜网大全’s representative in Peru for assistance.
解决方案
麦克菠菜网最稳定正规平台_最全菠菜网大全立即做出了回应,曼努埃尔·查皮利肯说, 米斯基·梅奥的维修技术员.
Two 菠菜网最稳定正规平台_最全菠菜网大全 representatives, a Senior 现场服务 Technician from 菠菜网最稳定正规平台_最全菠菜网大全’s headquarters in Hollidaysburg, Pa., 美国, and the Product Manager from 菠菜网最稳定正规平台_最全菠菜网大全’s Chile office, traveled to the Bayóvar 2 mine to assist with the replacement.
“菠菜网最稳定正规平台_最全菠菜网大全 had a very important role in the replacement of the tire,胡里奥·佩雷特尔说, Maintenance Superintendent at Miski梅奥. “We did not know the procedure, and we did not have the necessary equipment to do the replacement.”
The replacement required an entire plant shutdown, as well as the removal of several pieces of upstream equipment that were in operation. 在菠菜网最稳定正规平台_最全菠菜网大全到来之前, Miski梅奥 began preparing for the procedure by cutting the tire and welding lifting points to the tire so that it could be easily removed after the second cut was made.
“Our biggest challenge was cutting the existing tire and then placing the accessories to help us move components and make the assembly,”先生说。. Perettel.
一旦磨损的轮胎被拆除, 新轮胎被吊到合适的位置, aligned with the drum and mounted on jig assemblies close to the base of the tire. The new tire was positioned over the jig assemblies and prepared for induction heat treatment, 哪一种能让它膨胀到适合边缘.
Induction heat treating provides a controlled and consistent heating pattern to bond conductive materials via electromagnetic currents inside the object. 在Bayóvar矿井, this was achieved by wrapping the outer diameter of the tire with two layers of insulating blankets. Thermocouples were installed under the blankets so that the temperature could be monitored and recorded once the tire began to heat. The tire was then wrapped with heating cables, and the induction equipment was programmed to start heating the tire.
轮胎加热的时候, stop blocks were attached to the back of the rim to prevent the new tire from sliding past the rim during installation. Once the tire had reached desired temperature, it was slid onto the rim and allowed to cool down, which would shrink the tire to fit tightly to the rim of the drum. After it had cooled down, the tire was perfectly attached to the rim.
结果
With the collaborative effort from 菠菜网最稳定正规平台_最全菠菜网大全 and Miski梅奥, the tire replacement was carried out smoothly and efficiently.
“It took us time to plan the purchase of spare parts and the tools needed for the service, 但最后一切都很成功,” Mr. Chappilliquen说.
Mr. Perettel highlighted that the 旋转式洗涤塔 have been working optimally since 菠菜网最稳定正规平台_最全菠菜网大全 and Miski梅奥 performed the tire replacement. They continue to help Miski梅奥 meet their goal of producing high-quality phosphates.
“We are very pleased with 菠菜网最稳定正规平台_最全菠菜网大全’s service,”先生说。. Perettel. “The replacement of the tire was a great challenge, but we met the deadlines and had no major inconveniences in the aspect of safety.”
