In 2006, Armstrong Energy was formed and through its 100 percent wholly owned subsidiary, 阿姆斯特朗煤, has grown into a leading producer of steam coal in the Illinois Basin region near the Western Kentucky town of Centertown.
案例研究
In 2007, Armstrong began making preparations and buying equipment to facilitate their planned operations in Muhlenberg and Ohio Counties in Western Kentucky. 今天, 阿姆斯特朗煤 controls more than 300 million tons of proven and probable coal reserves in Western Kentucky and produces approximately 9.5 million tons of coal annually from three surface mines and three underground mines.
挑战
在复兴矿山时, 阿姆斯特朗的官员需要很多设备, one being an efficient system that could size the coal to their specifications. For one mine, the need was for 2” (5 cm), and for two nearby sites, the need was for 2.5” (6.3厘米)煤.
“We were in need of a system that would size the coal consistently to spec and separate out the quality coal from the unusable rock and other material,桑尼·贝尔德说, 阿姆斯壮公司煤制备主任. “Rocks and timbers getting into the system can cause downtime and wear and tear on the machines.”
“The system had to be high-efficiency and low-maintenance as we run all day every day,贝尔德继续说道.
灰尘是阿姆斯特朗的另一个大问题. 煤炭 mining generates dust, which can build up on the ground and damage the equipment. It’s also unsafe for workers and is regulated by environmental laws.
解决方案
Armstrong worked with 菠菜网最稳定正规平台_最全菠菜网大全 to find the best equipment for processing the different seams of coal mined at the site.
“We studied the Armstrong situation and reviewed our equipment options,——斯科特·伯恩斯, 菠菜网最稳定正规平台_最全菠菜网大全区域销售经理, 说. “效率, 安全, 低维护和最小停机时间, 我们推荐我们的旋转式破碎机, 是阿姆斯特朗在2009年投入运行的.”
A Rotary Breaker achieves reduction by repeatedly lifting the feed material and dropping it against perforated screen plates. The lifting and dropping crushes soft to medium-hard coal, which then passes through the screen openings into the discharge chute and onto the conveyor system below. This effectively separates the valuable coal from other material like rock, 开采木材或散铁.
For the three mine sites, 菠菜网最稳定正规平台_最全菠菜网大全 helped Armstrong select a 9’ x 18’ (2.7 m x 5.5 m) breaker that reduces 12” (30 cm) run of mine coal to 2” (5 cm) at 500 tons per hour; an 11’ x 21’ (3 m x 6.4 m) breaker that reduces 8” (20 cm) run of mine coal to 2.5” (6 cm) at 800 tons per hour; and a 12’ x 27’ (3.6 m x 8 m) breaker that reduces 8” (20 cm) run of mine coal to 2.5英寸(6厘米)在1200吨每小时.
Burns 说 the equipment performs a couple of key functions for Armstrong. “旋转破碎机不仅减少了煤炭, 它的喂养速度快，成本效益高, it also scalps off any undesirable material from the coal, like rock or mining timbers that might wreak havoc down the line in processing the coal at the prep plant.”
Burns also noted that other crushers simply reduce the entire feed and pass it on to the prep plant, where separation is more difficult and can also increase the amount of wear and tear on the plant’s equipment.
结果
Armstrong officials say they are pleased with the performance of the 菠菜网最稳定正规平台_最全菠菜网大全 回转式断路器.
贝尔德说:“与麦克菠菜网最稳定正规平台_最全菠菜网大全共事非常愉快. “破坏者每周7天，每天24小时都在工作. They size the coal and hold the dust down; they do their job very efficiently.”
The 菠菜网最稳定正规平台_最全菠菜网大全 Rotary Breaker cylinder is covered by a fabricated steel, 分区的防尘罩，以容纳逸出的灰尘. The dust housing has inspection doors that make maintenance simple. 贝尔德找到了断路器的单电机驱动器, low horsepower requirements and slow operating speeds excellent features that allow Armstrong to minimize maintenance needs and operating costs.
The Armstrong Dock Facility location features a 116-acre prep site and a 90-acre refuge area. 贝尔德在麦克菠菜网最稳定正规平台_最全菠菜网大全的帮助下说, 制品厂一年运转362天, 吞吐量为1,200 tons of raw coal per hour and the ability to blend up to five types of coal using a nuclear analyzer. The loading facility is capable of loading 2,500 tons per hour onto barges on the Green River.
Armstrong finds the cost of running the Rotary Breaker is small compared to the overall expenses in running the operation. “Our 菠菜网最稳定正规平台_最全菠菜网大全 Breaker is one of the most efficient pieces of equipment we have on this site,Baird继续说道. “We have very little upkeep on it – we put the coal in it, and it spits the rock out one end and the coal out the other end. 非常有效的.”
Another benefit of the 菠菜网最稳定正规平台_最全菠菜网大全 Rotary Breaker is that it runs quieter and smoother than other breakers. The 菠菜网最稳定正规平台_最全菠菜网大全 Breaker’s cylinder is machined in one set-up on a large lathe. The machining process assures that the cylinder is concentric and wears evenly, 减少轴承维修, extending the machine’s life and lowering the cost per ton produced.
Baird 说 in addition to the great products 菠菜网最稳定正规平台_最全菠菜网大全 offers, he also enjoys the attention to customer service he gets from 菠菜网最稳定正规平台_最全菠菜网大全.
贝尔德说:“与麦克菠菜网最稳定正规平台_最全菠菜网大全共事非常愉快. “From their salespeople to their technicians, they’re responsive. 我们打电话，他们就会及时赶到. They did help us get one issue resolved right away, and we haven’t had any problems at all with them.”
