Before baking, the lining material must have a certain natural strength (sufficient health period) in order to proceed. Oven principle "should be long should not be short, should be slow should not be fast". It should be carried out according to the oven curve established in advance, the heating speed should be uniform and stable, and the constant temperature time and temperature should be controlled well, and the temperature fluctuation should be no more than ±20℃. Prevent excessive heating, moisture can not be discharged in time, break through the wear resistant layer; Secondly, to prevent the temperature gradient in the refractory and wear-resistant layer is too large, resulting in huge thermal stress, causing the wear-resistant refractory layer to crack, bulge and fall off. Wear-resistant refractory layer outer steel shell (such as return leg, cyclone cone) too few exhaust steam holes, is also a factor that can not be ignored. The following is to be shared online by the charge manufacturer
In the furnace construction project, it is necessary to focus on the following processes:
The above information is provided by the charging material manufacturer
(1) Engineering measurement and pay-off. Including the elevation measurement, the related structure size measurement of the previous process and the measurement of the reference point of the furnace. According to the test results, the wiring is set out according to the construction requirements of furnace construction and the differences between the actual measurement and design, and the installation error is properly eliminated in the furnace construction process. This is the key link of the furnace construction project, and the degree of grasp is directly related to the effect of the whole project. (2) Acceptance and storage of materials. The acceptance procedures of materials include inspection of factory inspection certificate, re-inspection of design technical indicators, inspection of construction performance of amorphous materials, and inspection of resident A and combined installation of local structures. After the materials arrive at the construction site, they should be properly kept according to the different types of materials.
(3) Construction and quality inspection of different materials. This is the focus of the furnace construction project. It is necessary to strictly implement the standards, accurately use different refractory materials, and complete the construction of all furnace structures. The quality inspection includes the combination of self-inspection and special inspection, the combination of process inspection and sub-inspection and completion inspection. (4) Delivery and acceptance and hot state engineering. What needs to be emphasized here is that in the process of delivery and acceptance, in addition to the project delivery and acceptance in the general sense, it is particularly necessary to emphasize the confirmation and acceptance of the status between adjacent structures and related professional equipment. Hot state engineering mainly includes secondary pointing, pressure grouting and oven, among which the key of pressure grouting is the material and grouting process control, oven operation strictly in accordance with the oven system.
The above information is provided by the charging material manufacturer! Remind you: the furnace construction project in the capital construction project includes the implementation process of the above-mentioned various materials and structures, including various construction methods, which will not be repeated here. Welcome to telephone consultation!