氢氧化钾因为具有强碱性及腐蚀性，因而在化工行业和其它一些行业中都有很重要的应用，也可以作为很多类试剂应用于不同的领域，比如干燥剂、吸收剂、耐火粘合剂等。那么，下面我们来看看它的耐火粘合剂的制备方法吧。
Because of its strong alkalinity and corrosivity, potassium hydroxide is widely used in chemical industry and other industries. It can also be used as a variety of reagents in different fields, such as desiccant, absorbent, refractory adhesive, etc. Well, let's take a look at the preparation method of its refractory adhesive.
1、耐火粘合剂的制备方法
1. Preparation of refractory adhesive
①耐火液制备方法：在反应槽内顺序加入颗粒状氢氧化钾8kg、粉末状碳酸钠（苏打灰）（旭硝子株式会社制）7kg和金属硅化物30kg，再加入60l的水。在其中开始自然反应，从下层的产品开始剧烈反应，在反应槽内从下侧向上侧发生对流。反应温度自然上升，反应温度在80~90℃的范围内时，呈活跃的反应状态。反应温度高不超过92℃。反应在10h左右结束，分离固体，可以获得约48l（约70kg）耐火液。残留的固体是金属硅化物块，如果用水洗净，残留约22kg左右的金属硅化物块。在这种残存的金属硅化物块中，再补充加入约8kg左右的金属硅化物块，总和为30kg的金属硅化物，供给到二次反应中。与一次反应相同，在反应槽内加入颗粒状8kg，粉末状碳酸钠（苏打灰）（旭硝子株式会社制）7kg，接着，依次加入一次反应残留的金属硅化物块22kg和新的金属硅化物块8kg，接着加入60l水，开始二次制备耐火液的反应。在制备中，按照先加颗粒状氢氧化钾，再加入粉末状碳酸钠（苏打灰），再加入金属硅化物块，然后加水的加料顺序，由下层产品开始反应，可形成上下对流式活跃反应，由此制备的耐火液性能较好。
① Preparation method of refractory solution: in the reaction tank, 8 kg of granular potassium hydroxide, 7 kg of powdered sodium carbonate (soda ash) (made by Asahi nitrate Co., Ltd.) and 30kg of metal silicide are added in the reaction tank, and then 60L of water is added. In the reactor, the natural reaction begins, and the product in the lower layer reacts violently, and convection occurs from the lower side to the upper side in the reaction tank. The reaction temperature rises naturally. When the reaction temperature is in the range of 80 ~ 90 ℃, the reaction is active. The reaction temperature is not more than 92 ℃. About 48l (about 70kg) of refractory liquid can be obtained by separating the solid in about 10h. The residual solid is metal silicide block. If it is washed with water, about 22kg of metal silicide block will remain. In the remaining metal silicide block, about 8 kg of metal silicide block is added, and the total amount of metal silicide is 30 kg, which is supplied to the secondary reaction. In the same way as the first reaction, 8kg granular sodium carbonate and 7kg powdered sodium carbonate (soda ash) (made by Asahi nitrate Co., Ltd.) were added into the reaction tank. Then, 22kg residual metal silicide block and 8kg new metal silicide block were successively added into the reaction tank, and then 60L water was added to start the reaction of secondary preparation of refractory. In the process of preparation, granular potassium hydroxide is added first, then powdered sodium carbonate (soda ash), then metal silicide block is added, and then water is added. The reaction starts from the lower product to form the upper and lower convective active reaction. The performance of the prepared refractory is better.

②氢氧化钾的耐火胶黏剂的制备：将耐火液、裁断的旧报纸（其它旧纸也可用）、稻壳、棉分别加入反应槽中，进行充分搅拌均匀即制得耐火材料。
② Preparation of potassium hydroxide fire-resistant adhesive: the refractory liquid, cut old newspaper (other old paper can also be used), rice husk and cotton are respectively added into the reaction tank, and fully stirred to prepare the refractory.
2、这种耐火粘合剂性能若用耐火液涂覆木板，将涂覆的木板靠近1000~c火焰处30min不会发生燃烧。若将耐火胶黏剂混合物加压脱水至百分之四十五水分含量，在180℃下加压1h制得轻质耐火材料。将这种耐火材料靠近1500℃火焰观察30min，10min后耐火材料表面发生陶瓷化，经30min燃烧后，切开耐火材料，陶瓷化深度仅o.8mm，火未通人耐火材料内部。此外，耐火材料隔音抗冲击性能亦佳。其可切、锯、钉钉子、钉螺钉等加工性能与木材类同。
2. If the fire-resistant adhesive is used to coat the wood board, the coated board will not burn when it is close to the flame of 1000 ~ C for 30 min. If the refractory adhesive mixture is pressurized and dehydrated to 45% moisture content, the lightweight refractory is prepared by pressing at 180 ℃ for 1 h. The refractory was observed at 1500 ℃ for 30 min. after 10 min, the surface of the refractory was vitrified. After 30 min of combustion, the refractory was cut. The depth of the ceramic was only 0.8 mm, and the fire did not penetrate into the refractory. In addition, the sound insulation and impact resistance of refractories are also good. Its cutting, sawing, nailing, screw and other processing properties are similar to wood.
以上就是氢氧化钾的耐火粘合剂的制备方法以及相关知识介绍，这类耐火粘合剂可代替传统的厚纸板、聚苯乙烯泡沫塑料和其它板材，用于制备冷质框架、电视机壳、包装材料和桌椅及厨房用具等，作用非常大。
The above is the preparation of potassium hydroxide refractory adhesive and related knowledge. This kind of fire-resistant adhesive can replace traditional thick cardboard, polystyrene foam plastics and other plates. It can be used to prepare cold frame, TV casing, packaging materials, tables and chairs, and kitchen utensils.