You may not be familiar with potassium hydroxide. Because of its strong alkalinity and corrosivity, potassium hydroxide is an important compound in the chemical industry and other industries. It can also be used as a variety of reagents in different fields, such as desiccants, absorbents, fire-resistant adhesives, etc. It is common for us to use the desiccant in food packaging to prevent food from being damped.

（1）原材料與配方

(1) Raw materials and formula

①耐火液配方材料 配比/kg 材料 配比/kg氫氧化鉀 8金屬硅化物 30粉末狀碳酸鈉 7水 60。

① Refractory liquid formula material ratio/kg material ratio/kg potassium hydroxide 8 metal silicide 30 powdered sodium carbonate 7 water 60.

②無機耐火膠配方材料 配比/質(zhì)量份 材料 配比/質(zhì)量份耐火液 10稻殼 5舊報紙 80棉 5。

② Inorganic fire-resistant adhesive formula material ratio/material ratio by weight/fire-resistant liquid by weight 10 rice husk 5 old newspaper 80 cotton 5.

（2）氫氧化鉀耐火粘合劑的制備方法

(2) Preparation of potassium hydroxide fire-resistant adhesive

①耐火液制備方法：在反應(yīng)槽內(nèi)順序加入顆粒狀氫氧化鉀8kg、粉末狀碳酸鈉（蘇打灰）（旭硝子株式會社制）7kg和金屬硅化物30kg，再加入60l的水。在其中開始自然反應(yīng)，從下層的氫氧化鉀開始劇烈反應(yīng)，在反應(yīng)槽內(nèi)從下側(cè)向上側(cè)發(fā)生對流。反應(yīng)溫度自然上升，反應(yīng)溫度在80~90℃的范圍內(nèi)時，呈活躍的反應(yīng)狀態(tài)。反應(yīng)溫度高不超過92℃。反應(yīng)在10h左右結(jié)束，分離固體，可以獲得約48l（約70kg）耐火液。殘留的固體是金屬硅化物塊，如果用水洗凈，殘留約22kg左右的金屬硅化物塊。在這種殘存的金屬硅化物塊中，再補充加入約8kg左右的金屬硅化物塊，總和為30kg的金屬硅化物，供給到二次反應(yīng)中。與一次反應(yīng)相同，在反應(yīng)槽內(nèi)加入顆粒狀氫氧化鉀8kg，粉末狀碳酸鈉（蘇打灰）（旭硝子株式會社制）7kg，接著，依次加入一次反應(yīng)殘留的金屬硅化物塊22kg和新的金屬硅化物塊8kg，接著加入60l水，開始二次制備耐火液的反應(yīng)。在制備中，按照先加顆粒狀氫氧化鉀，再加入粉末狀碳酸鈉（蘇打灰），再加入金屬硅化物塊，然后加水的加料順序，由下層氫氧化鉀開始反應(yīng)，可形成上下對流式活躍反應(yīng)，由此制備的耐火液性能較好。

① Preparation method of refractory liquid: add 8kg of granular potassium hydroxide, 7kg of powdered sodium carbonate (soda ash) (prepared by Asahi Co., Ltd.) and 30kg of metal silicide in sequence in the reaction tank, and then add 60l of water. The natural reaction starts in the reaction tank, the violent reaction starts from the potassium hydroxide in the lower layer, 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 ℃, it is in an active reaction state. The reaction temperature shall not exceed 92 ℃. The reaction ends in about 10h, the solid is separated, and about 48l (about 70kg) of refractory liquid can be obtained. The residual solid is metal silicide block. If it is washed with water, about 22kg of metal silicide block remains. In this residual metal silicide block, add about 8kg of metal silicide block and 30kg of total metal silicide to the secondary reaction. As for the primary reaction, 8kg of granular potassium hydroxide and 7kg of powdered sodium carbonate (soda ash) (made by Asahi Co., Ltd.) are added into the reaction tank, followed by 22kg of metal silicide blocks remaining in the primary reaction and 8kg of new metal silicide blocks, followed by 60l of water to start the reaction of preparing refractory liquid for the second time. During preparation, granular potassium hydroxide is added first, then powdered sodium carbonate (soda ash) is added, then metal silicide blocks are added, and then water is added. The reaction starts from the lower layer of potassium hydroxide, forming a convective active reaction from top to bottom. The refractory liquid thus prepared has good performance.

②耐火膠黏劑的制備：將耐火液、裁斷的舊報紙（其它舊紙也可用）、稻殼、棉分別加入反應(yīng)槽中，進(jìn)行充分?jǐn)嚢杈鶆蚣粗频媚突鸩牧稀?/div>