Roller press side platens technical improvement scheme and application

Roller press side platens transformation and application of 2020 - 06 - 05 qing-xin liu ( Anhui tongling conch cement co. , LTD. ) Abstract: roller press is more and more widely applied in modern dry process cement production, it can effectively increase the grinding efficiency, reduce the cement grinding power consumption, working condition of roller press is good or bad directly affects the mill capacity and power consumption of high and low, in this paper, combining with the practical production, some questions of rolling machine is running in study, and the roller press side platens was related technical renovation work, enhances the working efficiency of the rolling machine. Key words: roller press; Lateral baffle; Cement mill; Roller partial 0 quote roller press used more common in recent years, and more technological transformation into a single grinding system combined grinding system, will be transferred to the rolling mill broken part function machine system, can reduce the burden of grinding machine parts, give full play to the function of the grinding mill, effectively improve the cement grinding machine production and reduce power consumption. My company's existing three & Phi; 4. 2× 11 m closed-circuit grinding and 4 with roller press machines & Phi; 4. 2× 14. 5 m +Φ 170× 120 roller press grinding, technical transformation, operation of practical encountered more problems, such as roller press, roll a great affected by material segregation often lead to jump stop, and eventually lead to more technical renovation of side boards, successfully solved the bottleneck problem of roller press. 1 side platens was provided. 1 technical renovation project rolling machine in the process of running a large number of material from leaking on both ends of the roller, part of the material without extrusion, roller press, although do manual work is same, reduced the volume of the finished product [ 1] 。 As shown in figure 1, figure 2, the original single side platens function, only can prevent the material from the two sliding sideways out of roller press, and extrusion effect can not be improved, and adjust the deflection of rolls. As shown in figure 3, figure 4, after technical renovation the roller press into the roller set inside the technological transformation of the valve side platens, technical side platens are pointed bottom shape laminating roller surface, with around 10 mm roller surface distance control, through the adjustment screw on the girder installed on both sides of the inward or outward push-pull technical side platens, to regulate the flow of material cross-sectional area, with the purpose of the position of material flow to improve the effect of roll extrusion press, improving the power of rolling machine and grinding machine. 1. 2 principle analysis of roller press the original side platens technological upgrading, raised the roller press adaptability to changes into the roll material, have very good adjustment effect to roll at the same time, to improve the roller press work effect and operation stability, reduce gringing enercy raising their grinding machines. Rolling machine in front of the technical renovation in the roll material are too many poor fine powder, the roller press roll gap is difficult to open, fine powder flow between two rollers, failed to have squeezing effect, through the technical side platens, can effectively change into the width of the roll of material flow and roll into the position, thus in the roll material is poorer, effectively improve the effect of roll extrusion press. Formed at the same time, in order to ensure the stability of the cake, need materials uniform stress, should be kept in the operation of the two roller in parallel [ 2] Roll gap deviation, cannot too big, beyond the scope will automatically jump stop. When the material changes produce segregation results in uneven into the roll material, produce bigger roll slant, the original side platens do not have adjust the function of roll slant, only through the inclined board and flat plate adjustment, but the bad effect in actual use, roller press jump stop frequently, and the bearing wear. And technical side baffle can be regulated by the change of the opening material into the roller location, to adjust roll slant, prevent the failure caused by roller partial jump stop, greatly reduce the failure rate and damage of bearing. 2 practical application and effect in the process of actual use, roller press power by 10% ~ 20%, 2 # tongling conch cement mill, for example: ( Model for RP120 - 80, the original roll gap 10 mm, roller press power 500 kw) , in the process of the normal operation of the electric current at about 30 ~ 35 a, run the roll gap of about 20 mm, when poor material particle size roller mechanical and electrical current is only 20 ~ 25 a, open the roll gap can only about 10 ~ 13 mm, influence greatly the effect of roll extrusion press mill is difficult to play. After technological upgrading, side platens to adduction, force the roller surface on both sides of the original material extrusion to central China, thus effectively open roll gap, through the material and material between the extrusion and broken effect, roller mechanical and electrical flow around 30 a, roll gap can be opened up to 20 mm or so, working condition of roller press. Into the roll material segregation led to roll press roller partial occurs, the side of the roll gap smaller side platens to regulate, or the side of the roll slant larger lateral baffle to adjust, change the material into the roller location, can quickly improve roll slant phenomenon, can effectively reduce the rolling machine for roll gap jump stop frequency deviation. 3 conclusion I company to technological upgrading of roller press side platens, improve the effect of the pressure roller press and running stability, give full play to the ability of grinding roller, energy saving effect is obvious. References: 1] Du Wenfeng TongYong. Specific measures to improve the effect of rolling machine extrusion [ J] 。 Cement production, 2015 ( 11) : 6. ( 2] Hu Zhen. Rolling machine in the application of cement grinding system [ J] 。 Technology and equipment, 2013 ( 5) : 37 - 45. Source: 'China cement' 7