A New Fully Automatic Rotary Enamel Smelter (2)
Release time:
2026-03-19 10:22
Source:
Glass and Enamel
(Continued from previous article)
Neither the tank furnace nor the crucible furnace can rotate, and even with stirring, the uniformity of the molten enamel is lower than that of the rotaryfurnace. However, the rotaryfurnaces currently in use also have obvious drawbacks. First, the rotation method is simple, only able to rotate 360° in one direction and at one speed. After the batch material melts, there will be a phenomenon of hanging wires from top to bottom, which is easily blown out by the flame, not only wasting raw materials, but also blocking light and making it difficult to continuously measure the temperature. Therefore, the rotaryfurnaces currently in use measure the temperature from the flame after the fire is stopped, and it is impossible to monitor the temperature inside the furnace in real time. In addition, the noise is high and the working environment is harsh.
2. A New Fully Automatic Rotary Enamel Smelter
After years of effort, the Qinhuangdao Glass Industry Research and Design Institute has developed a new type of rotaryfurnace, which has been operating in enamel factories in China for many years, and the quality of the enamel enamel produced by it has reached the international level.
The new rotaryfurnace has obvious advantages compared with the original rotaryfurnace:
(1) Automated batching. The entire batching process is computer-controlled. Silica sand, soda ash, potassium carbonate, borax, boric acid, zirconium oxide, titanium oxide, strontium oxide, nickel oxide, copper oxide, antimony oxide, and molybdenum oxide are placed into different silos. After selecting the formula on the screen and pressing the Enter key, each raw material automatically flows into its respective scale. After precise weighing, it enters the mixer, is mixed evenly, and then placed into the hopper. The entire process requires only one worker pressing a button. This not only reduces labor intensity but also ensures accurate batching, preventing batching errors.
(2)High thermal efficiency. Previously, the rotaryfurnace's flue gas was directly discharged into the atmosphere, polluting the working environment and causing significant energy waste. The new rotaryfurnace adds a pad between the rotaryfurnace and the chimney, reducing heat loss and incorporating a waste heat recovery system. Actual measurements show energy savings of 20%-23%, especially in summer, where the temperature in the enamel frit melting workshop is significantly lower than before.
(3) High degree of automation. The original rotaryfurnace lacked an online real-time temperature monitoring device; the temperature could only be measured using an optical stabilizer when the furnace was shut down. This temperature was not the actual temperature inside the furnace during flame combustion, making precise temperature control impossible, only providing a rough estimate. The new rotaryfurnace incorporates an online temperature monitoring system, enabling real-time monitoring and adjustment of the furnace temperature. Multiple melting schemes are set within the PLC according to different swing angles, rotation speeds, and temperature curves. After the batch material is added, everything is automatically controlled by the PLC, and the system automatically stops operation after the program is completed.
When wire adhesion occurs in the new rotaryfurnace, the rotaryfurnace swings to prevent molten glass from adhering to the top of the rotaryfurnace, thus eliminating the adhesion and preventing the enamel glaze from being blown away.
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