The pyrite cinder (dry mine) is sieved through a 100 mesh sieve, and the sieved product is ground in a rod mill for 5 min, the grinding concentration is C=70%, stirred for 5-8 minutes, and then re-elected by a spiral chute. The obtained tailings were further shaken to obtain the middle and tailings respectively. The process flow is shown in Figure 1: Figure 1 spiral chute - shaker process flow chart According to the test results in the following table, under the same pretreatment conditions, the slag can obtain 62.34% concentrate grade, 57.49% cumulative recovery of I+II, and iron concentrate containing less than 0.3% sulfur. Table spiral chute - shaker test product name Yield(%) grade(%) Recovery rate(%) Fe S Fe S Concentrate I 24.76 62.34 0.271 30.37 3.86 Concentrate II 32.64 58.65 0.236 37.67 4.43 Tailings 42.60 38.13 3.76 31.96 91.71 total 100 50.82 1.74 100 100 Architectural Tension Bar For Construction High Strength Steel Tie Rod are steel structural members made of carbon structural steel and alloy steel, processed by machining, heat treatment and surface anti-corrosion treatment, supplemented by adjusting sleeves, lock and joints etc. The steel tie rod are important components of steel structures for construction of giant, large span buildings and ship docks. They are mainly used for prestressed parts and large span buildings in construction projects. While the strength of the product is improved, but the plasticity index is not reduced, which satisfies the principle of using the same amount of strength in the architectural design. The tie rods, tie bars, tension rods and tension bars steel grades are specified as grade 460, grade 520, grade 550, grade 650. Tension Bar,High Tensile Steel Rod,Structural Tension Rods,Architectural Tension Bar For Construction SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.sdcolddrawnsteelbar.com
Pilot process of pyrite cinder spiral chute-shaker