金矿切换到Watson-Marlow Qdos和Bredel Apex Pumps

• Qdos 30 delivers more accurate and consistent flow rate efficiency than electric –diaphragm pumps in reagent dosing
• Company set to replace all eight diaphragm pumps in this application with Qdos 30
• APEX 35 also adopted for thickener underflow task

A gold mining company with assets in one of the most prolific gold producing regions of Canada is now benefiting from the adoption of Qdos and APEX peristaltic pumps from Watson-Marlow Fluid Technology Group (WMFTG). Deployed in two important applications, Harte Gold Corporation is now enjoying far better flow rate efficiency, along with significant reductions in both maintenance requirements and downtime. The company is subsequently looking to invest in further pumps from WMFTG.

Harte Gold operates the wholly-owned Sugar Zone Mine, located on the Dayohessarah greenstone belt in Ontario. The mine entered commercial production in 2019 and has an anticipated operating life of approximately 13 years at current output levels. Producing 60,000 to 65,000 ounces of gold per year at 800 tpd (tons per day) throughput rate, a mine expansion study is currently in progress to support 1200 tpd.

Efficiency challenge

In the reagents room, Harte Gold operates eight diaphragm pumps on a 24-7 basis. However, issues over insufficient process efficiency, the amount of maintenance time needed to replace diaphragms and the potential for leaks, prompted the company to look at alternative solutions.

Harte Gold invited WMFTG to trial its Qdos 30 chemical metering pump. For a period of one month, the mining company compared the Qdos and an existing electric diaphragm pump dosing flotation reagents such as potassium amyl xanthate (PAX).

More consistent output

QDOS 30的流速为100-300 mL/min，在流速效率上显着优于隔膜泵。尽管在试验前和试验期间根据需要调整剂量率，但与现有泵相比，QDOS输出明显更加一致，从而带来了过程优化的潜力。

ReNu peristaltic pumphead technology is at the core of the Qdos pump and is key to its success at Harte Gold. ReNu ensures accurate and repeatable chemical dosing and, thanks to its contained design with integral leak detection, reduces wastage and eliminates any potential for operator exposure to chemicals.

此外,哈特金personnel confirmed that both operations and maintenance were trouble-free during the trial runs. Indeed, there were favourable reports of the colour TFT display which shows both flow and speed, while the maintenance team is in full support of the single, no tools ReNu pumphead replacement.

这项试验的成功是，Harte Gold现在希望在未来几个月内逐步逐步逐步逐步淘汰试剂室中所有现有的隔膜泵。尽管对现场的第一个QDOS 30的控制是手册，但该公司将采用4-20mA I/O前进。Harte Gold还计划在其业务的水处理方面用QDOS型号代替diaphragm泵。

Golden performance

In another area of its operations, Harte Gold has replaced an existing peristaltic pump (not Watson-Marlow) with an APEX 35 in a 24/7 application. Here, the pump transfers thickened gravity concentrate from a gold decanting tank to a shaker table. However, the company found itself replacing hoses every week in its existing peristaltic pump.

新的金房间decanter底流量：

• Flow 0.67 m3/hr with 50% solids
• Pressure 2 metre lift open to atmosphere and 2 metre flooded suction
• 温度10-30c

现有的集中增稠剂底流量：

• 流量1.11 m3/hr，固体在50至70％之间
• Pressure 5 metre lift open to atmosphere and 2 metre flooded suction
• 温度10-30c

该公司已经有一个Apex 35运行，因此认为同一模型可以为重力浓缩液提供良好的解决方案。NR软管持续了12周，而不是先前实现的一周软管寿命，而是在此关键应用中持续了12周。现在，每年只需要四个软管，而不是52个软管，相当于维护间隔1200％以上。