经过浓缩的高温熔融碱依靠重力经管道流入片碱机弧形锅，到达一定液面后，粘在片碱机转鼓上，转鼓内有循环冷却水喷头，热碱在转鼓上立即受冷后结晶，通过片碱机另一侧的刮刀刮成厚度为0，8~1，2mm的片碱。在开车投料之前，调整刮刀与转彭的间隙，要求为0，2mm左右;检查循环冷却水的流通情况，视生产负荷和片碱成片情况，调整循环水的流量。

The concentrated high-temperature molten alkali flows into the arc-shaped pan of the flake soda machine through the pipeline by gravity. When it reaches a certain liquid level, it sticks to the drum of the flake soda machine. There is a circulating cooling water nozzle in the drum. The hot alkali crystallizes immediately after cooling on the drum and scrapes into flake soda with a thickness of 0, 8~1, 2mm through the scraper on the other side of the flake soda machine. Before start-up and feeding, adjust the clearance between the scraper and the rotary table, which is required to be about 0, 2mm; Check the circulation of circulating cooling water, and adjust the flow of circulating water according to the production load and flake alkali production.

循环水流量过小，转鼓不能及时降温，会在转鼓上形成熔融碱，此时，应立即开大循环水量或者摇下弧形锅，待转鼓冷却，转鼓上的熔融碱结晶后，用刮刀刮下，再慢慢调小水量或摇上弧形锅，以防因熔融碱刮下后，再结晶堵塞片碱输送及包装系统。

If the circulating water flow is too small, the drum can not be cooled in time, and molten alkali will form on the drum. At this time, immediately increase the circulating water volume or shake down the arc-shaped pot. After the drum is cooled and the molten alkali on the drum crystallizes, scrape it off with a scraper, and then slowly reduce the water volume or shake up the arc-shaped pot, so as to prevent the transportation and packaging system of flake alkali from being blocked by recrystallization after the molten alkali is scraped off.

循环水流量过大，会使熔融碱在刚接触转鼓时就立即被冷却结晶，在转鼓，上形成大片碱块，此时，应逐渐关小循环水量，以防大片碱块进入片碱输送及包装系统形成“架桥”现象，堵塞片碱输送和包装通道。另外，应及时注意片碱机刮刀的使用情况如果刮刀磨损严重，将影响片碱成片和生产能力，应及时更换。

If the circulating water flow is too large, the molten alkali will be cooled and crystallized immediately when it contacts the drum, and large alkali blocks will be formed on the drum. At this time, the circulating water volume should be gradually reduced to prevent large alkali blocks from entering the flake alkali conveying and packaging system to form a "bridge" phenomenon, blocking the flake alkali conveying and packaging channels. In addition, pay attention to the use of the scraper of the flake alkali machine. If the scraper is seriously worn, it will affect the flake alkali production and production capacity, and it should be replaced in time.

此外由于设计上的不足，刮刀的使用寿命很短；片状KOH的苛性难免使整个生产系统出现设备、管道及水、电、气等方面的故障，停车的频率较高。接盛于桶中的碱不但已凝固成碱块，而且因高温时接触空气，排放管道和接盛容器受到氧化，使接盛的固碱呈黑色，且杂质含量大，只能是废碱。

In addition, due to the lack of design, the service life of the scraper is very short; The causticity of flake KOH inevitably causes equipment, pipeline, water, electricity, gas and other failures in the whole production system, and the shutdown frequency is high. The alkali contained in the barrel has not only solidified into alkali blocks, but also the discharge pipe and container are oxidized due to contact with air at high temperature, so that the solid alkali contained in the barrel is black and has a large amount of impurities, so it can only be waste alkali.

另外，氢氧化钾熔融碱冷却成片过程停车后系统进入了空气，每次再开车必然先产出大量的黑碱。以前为减少停车次数，曾经带料处理故障，即在不停止投料的情况下，处理熔盐炉、包装秤故障等，尤其是不停车更换刮刀，需几个小时才能换好。

In addition, after the potassium hydroxide molten alkali cooling process stops, the system enters the air, and a large amount of black alkali will be produced first after each start-up. In the past, in order to reduce the number of stops, we used to deal with the faults with materials, that is, to deal with the faults of molten salt furnace and packaging scale without stopping feeding, especially to replace the scraper without stopping. It takes several hours to replace it.

这期间因无刮刀不能制片，长时间大量排放的熔融碱无法再用桶接盛，只能排人地沟，造成很大的浪费，同时因排放时产生的碱蒸气温度高、腐蚀性强，经常损坏主要设备和仪表，并伤害操作人员的皮肤和呼吸道；形成的碱性废水污染环境，须大量的酸去中和。

During this period, the film cannot be produced without a scraper, and the large amount of molten alkali discharged for a long time cannot be collected in barrels, and can only be discharged into the trench, resulting in great waste. At the same time, the alkali steam generated during discharge has high temperature and strong corrosivity, which often damages the main equipment and instruments, and damages the skin and respiratory tract of operators; The formed alkaline wastewater pollutes the environment and needs to be neutralized with a large amount of acid.

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