The quick assumption when it comes to high temperature pumps is that they’re only meant for high temperature liquids (up to 200°F, in BJM’s case). That’s not always the case. There’s a reason that BJM refers to its Fahrenheit pump as a high temperature AND high endurance submersible pump. The “high endurance” part comes into play when the motor produces its own heat that the pump needs to dissipate that has nothing to do with the temperature of the fluid.Diagnosing the Issue
Figuring out that you need a high temperature submersible pump for endurance issues isn’t always easy. There are indications that may point you (or your pump supplier) in that direction.
- Water Temperature Isn’t Hot Enough to Cause Issues: You are experiencing premature failures similar to when pumping hot liquid and the pump can’t dissipate the heat.
In the mining and aggregate industry, you face many complex challenges. From fluctuating demand to stricter regulations, you’re likely feeling more pressure to be more efficient than ever. One aspect that can have a big effect on your bottom line is using the right submersible slurry pump.
If you’ve experienced pump issues on past projects, then you know the impact it had on the project. Clogs, motor failures, and premature wearing are some of the problems that cause costly project downtime. The maintenance costs of pulling the pumps for repair and replacement quickly add up.Submersible Slurry Pump Selection Considerations
Mining and aggregate environments are especially tough on most pumps. Selecting the right submersible slurry pump is more important than ever to minimize your costs.
In a previous blog post, we discussed how stainless steel submersible pumps cure corrosion-related pump problems. In many applications, corrosive liquids combine with other factors, such as high temperatures, hard-to-pass solids, and potentially explosive environments. These require more than a standard submersible stainless steel pump.High Temperature and Heavy-Duty Cycles
Although 316 stainless steel pumps are highly corrosion resistant, they do have some drawbacks. The most significant is that they take seven times longer to dissipate heat than traditional cast iron pumps. Retaining heat for extended periods can lead to premature pump failures when pumping corrosive liquids at elevated temperatures.
Here’s how this damaging chain of events begins. The high-temperature liquid limits the pump motor’s ability to cool itself through heat transfer. As the motor runs hotter, the seal oil begins to break down.