1. Mixing of Henan Lite refractory castables: it is necessary to use forced mixer or mortar mixer to mix materials, manual mixing is not available. Equipment and things: compulsory or mortar mixers, buckets, scales, shakers, shovels, trolleys, etc. Mixing: Put the big bag of material in the mixer first, then the small bag of material, dry mixing for 1-2 minutes, then the material can be discharged for pouring. Judgment method of water content: In order to judge whether the water content of the mixing material is suitable, a simple "hand kneading into a ball" method can be selected for testing: if the pellet is deformed and flows out from the hand seam, it indicates that the water content is too much: if If the pellets are cracked and scattered, it indicates that the water content is too low. Mixing water consumption: take the water consumption given in the instruction manual of the batch of products as the standard, strictly control the water consumption and accurately measure it.
Note: ① The things used in the construction process, such as mixers, buckets, shovel, etc., should be cleaned up in advance, and lime, gravel, Portland cement and other sundries should not be mixed in. ②The water used for mixing must be clean tap water. Under the condition that the slurry can be shaken out, use as little water as possible to achieve a better construction effect. ③The mixing amount is not easy to be too much each time, it should be determined according to the type of the mixer, otherwise it will cause the mixer to get stuck and stop. The remaining agglomerated block material cannot be mixed with water again. ④The temperature of the construction site must be between 5 and 30℃. If the temperature on the construction site is lower than 5℃, it is necessary to adopt corresponding heating protection measures before construction: if the temperature on site is higher than 30℃, it is necessary to choose corresponding cooling protection The method can be used for construction: otherwise, the product will be difficult to construct or its function will be reduced.
2. The pouring construction of Henan Lite refractory castable: Check: It is necessary to check whether the anchors are welded firmly before the castable construction, and heat-resistant grab nails should be used for parts above 500℃. The outer surface of the anchors should be painted with 0.5-1mm thick paint or wrapped with plastic tape to buffer the expansion force after heating and remove debris from the mold. Pouring control at the moment: the newly mixed castable should be poured quickly, and the pouring should generally be completed within 20 minutes. Pouring: Pour the mixed pouring material into the mold, and pierce the vibrating rod in time to vibrate. The vibrating must be even. When the pouring material is in a flowing state, move the vibrating rod at a speed of 1-2m/ minute. When pulling out the shaker, the speed should be slow. After pouring, site temperature requirements control: after pouring and before condensing, the site temperature must be kept above 5°C (5-30°C), and the site temperature must be below 5°C. It is necessary to adopt corresponding temperature rise protection methods, otherwise it will cause a slowdown. Condensation, resulting in a decline in product function.
Note: ①The appearance of the castable after the sensation should be kept, and it is not suitable to use things to polish it, and it is not allowed to sprinkle cement powder on the surface to polish it. ② The oscillating bar must be backed up to prevent the backup bar from being activated in time when the oscillating bar fails. ③After the completion of construction, within 24 hours of the construction body, especially before the castable is hardened, it is strictly forbidden to move, stir or ram, otherwise, cracks and even complete destruction of the pouring can occur. ④ The castable should be constructed in succession. When the continuous construction is not possible due to various reasons, the construction joints can be left and left at the expansion joints, otherwise the construction joints will be pitted, that is, a cross with a depth of 10mm and a width of about 20mm is drawn on the castable. Ditch, the distance is about 100mm.
3. Maintenance of Henan Lite refractory castables: things: polyethylene plastic film, straw bags, etc. Ambient temperature requirements and manipulation: The maintenance temperature of the pouring body is appropriate to be between 15-35°C. If it exceeds this temperature range, corresponding methods of heating or cooling should be adopted, otherwise it will cause a decline in the use of the product. Maintenance: After the castable is hardened, it is necessary to immediately cover the surface of the construction with a polyethylene plastic film, and then put a wet grass bag on it to prevent water transpiration and promote cement activation. After hardening, stop hitting and sensation within one day. According to the hardening condition, the mold can be removed after 24-30 hours of hardening. After removing the mold, maintain it for 2 days as needed, and continue to cover it with polyethylene plastic film and wet grass bags during maintenance. After 3 days of oxidation, the polyethylene plastic film and the wet straw bag were removed. Let the pouring body dry in the air for 1 day, and then it can be baked.
