The Blastcrete Model MX-20CM mixer/pump has been designed to revolutionize refractory placement. This machine can be used for both small refractory installations of 2-3 tons per hour as well as high volume installations of up to 25 tons per hour. The machine features a compact two-stage high-shear primary continuous mixer where the material is hydrated, and a medium shear secondary mixer that is mounted in the receiving hopper of the 4 in. high pressure swing tube pump. While the discharge pressure of the 4 in. pump is an industry leader, the hydraulic pressure to operate the pump is much lower because of oversized differential cylinders. The popular and proven swing out receiving hopper is also a feature of the new pump making it much easier to clean and service. Dust generated in charging the continuous mixer is all but eliminated, and the clean up of the continuous mixer is much quicker and generates very little waste. The efficiency of the two stage mixer and pump with oversized differential allow for the machine to require only 100 H.P. which lowers fuel consumption by 50% when compared to competitive machines. The towing weight of the machine is only 7,500 pounds.