Discharge cooling method for lead tetroxide oxidizing furnace

Abstract

The invention discloses a discharge cooling method for a lead tetroxide oxidizing furnace. The discharge cooling method comprises the following steps of firstly, initial discharging: finished product materials oxidized in the lead tetroxide oxidizing furnace directly fall into a storage bin from an outlet of the oxidizing furnace, firstly fall on material blocking rollers in the bin and then fall on air inlet pipes; secondly, cooling air supplying: a blower supplies air to the storage bin through a main air inlet channel at the speed of 150m<3> / h; thirdly, heat transfer: a heat outlet hole is formed in the top end of the storage bin; on one hand, the heat generated by falling of initial discharged materials and the falling process is directly inputted to the lead tetroxide oxidizing furnace through a corrugated pipe; fourthly, discharging: a discharger is driven by a motor to downwards discharge products in the storage bin at the speed of 4kg / min; fifthly, secondary discharging: the discharger feeds the finished product materials into a discharging cylinder, the finished product materials firstly fall into a first-stage funnel; when the finished product materials in the first-stage funnel are enough and exceed the elastic limit of a shrapnel below the first-stage funnel, the finished product materials in the first-stage funnel fall into a second-stage funnel; according to the mode, the descending speed of the finished product materials is retarded, so that the aims of dissipating heat and cooling are achieved.

Description

technical field [0001] The invention relates to the technical field of red lead processing equipment, in particular to a method for cooling red lead oxidation furnace discharge. Background technique [0002] Currently in the production of red lead, the temperature in the red lead oxidation furnace is as high as 470°C, and the initial temperature of the oxidized red lead powder is also around 470°C. Most of the finished red lead products are packaged in ton or half-ton plastic container bags, which are damaged because they cannot withstand high temperatures, resulting in increased production costs. [0003] The traditional method is to put the oxidized red lead powder in a high-temperature resistant container in advance, and then put it into a packaging bag for storage management after cooling, which extends the process flow and leads to low production efficiency. Moreover, since the production process of red lead is to process lead ingots through melting, powder making, gra...

AI Technical Summary

Problems solved by technology

Most of the finished red lead products are packaged in ton or half-ton plastic container bags, which are damaged due to the inability to withstand high temperatures, resulting in increased production costs

[0003] The traditional method is to put the oxidized red lead powder into a high-temperature-resistant container in advance, and then put it into a packaging bag for storage management after cooling, which extends the process flow and leads to low production efficiency

Moreover, since the production process of red lead is to process lead ingots through melting, powder making, granulation, calcination and oxidation, etc., in the process of these processes, they are all completed under high temperature conditions in iron containers. lead) industry standard (HG / T4503-2013), the content of iron (ω%) is less than or equal to 0.0015, so this red lead production process is difficult to control the iron content, which often leads to the production of red lead products due to If the iron element content exceeds the standard and fails to pass, it will be returned to the furnace for re-oxidation, which will not only cause energy waste and increase production costs, but also may cause secondary environmental pollution and increase the probability of employees being exposed to occupational hazards

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