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The powder mixture has two spirally arranged ribbons on the shaft. The spirals are left
hand and right hand. When mixture is rotating outer blade pushes the material in one
direction and the inner blade pushes the material in opposite direction. This mixes the
material more homogeneously. The mixed material is removed from the mixing chamber by
rotating the blades such that outer blade pushes the material towards the outlet. The
mixed material is then sieved on the sieving machine attached as shown in the picture. The
sieving machine grinds oversized particle and breaks the lumps formed during mixing.
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