Manufacturing method of potassium water glass
I. Introduction
Potassium water glass, also known as potassium silicate, is an important inorganic chemical raw material widely used in ceramics, glass, soap, textile, paint, building materials and other fields. Due to its unique physical and chemical properties, potassium water glass has an important position in the field of raw materials for chemical production. This article will introduce the manufacturing method of potassium water glass in detail.
II. Raw materials and equipment
1. Raw materials: potassium hydroxide (KOH), quartz sand (SiO2), water (H2O).
2. Equipment: reactor, stirrer, thermometer, pH meter, filter, storage tank.
3. Manufacturing steps
1. Ingredients: add potassium hydroxide, quartz sand and water into the reactor according to a certain proportion. Generally speaking, the mass ratio of potassium hydroxide and quartz sand is 1:2～1:3, and the amount of water added is determined according to the reaction demand and equipment capacity.
2. Stirring and reaction: Turn on the stirrer to make the raw materials fully mixed in the reaction kettle. As the reaction proceeds, potassium water glass is gradually generated. Control the reaction temperature in the appropriate range, generally 80-120°C. At the same time, monitor the acidity and alkalinity of the reaction system with a pH meter to ensure that the reaction proceeds smoothly.
3. Maturation: After the reaction is completed, stop stirring and let the potassium water glass mature in the reactor for a period of time to improve its stability and quality.
4. Filtration and storage: After maturation is completed, separate the potassium water glass from solid residue through filter, then pour the clear potassium water glass into storage tank and keep it sealed.
4. Precautions
1. Strictly control the proportion of raw materials and reaction temperature to ensure that the generated potassium water glass meets the quality requirements.
2. During the reaction process, pay close attention to the change of pH value and adjust the addition amount of potassium hydroxide in time to keep the stability of the reaction system.
3. The maturation time should be appropriate, too long or too short will affect the quality of potassium water glass.
4. Keep the equipment clean during the filtration process to avoid impurities entering into the potassium water glass.
V. Quality control and testing
In order to ensure the quality of potassium water glass, a series of quality control and testing are needed. Firstly, the quality inspection of raw materials should be carried out regularly to ensure that the raw materials meet the standard requirements. Secondly, during the reaction process, the parameters such as pH, temperature and viscosity of the reaction system should be paid close attention to and adjusted in time. Finally, quality inspection should be carried out on the generated potassium water glass, including appearance, concentration, viscosity, pH value and other indexes, to ensure that the product meets the relevant standards and quality requirements.
Six, safety and environmental protection
In the manufacturing process of potassium water glass, we should always pay attention to safety and environmental protection. First of all, it is necessary to ensure the safety of the operators, comply with the relevant safety regulations, and equip with the necessary protective equipment. Secondly, it is necessary to reduce the emission of waste and pollutants, make reasonable use of waste or treatment, and protect the environment.
VII.CONCLUSION
The manufacturing method of potassium water glass involves a number of links and considerations, and requires strict control of the ratio of raw materials, reaction conditions and quality testing and other requirements. By mastering the appropriate manufacturing methods and quality control measures, high quality potassium water glass can be produced, providing important support for the field of raw materials for chemical production.
