Abstract:

TRIZ theory,as a universal problem solving method,has been widely used in the technological innovation of various industrial fields.According to the TRIZ theory updated to 2010,contradictory analysis was made on the problem of impurities that affect the morphology of products produced by the process of producing magnesium hydroxide from light-fired powder.According to the contradiction matrix,02 extraction/separation principles,24 intermediate principles and 35 principles of changing physical-chemical state were selected for specific application studies.The results showed that the ammonia removal solution was applied to the 02 extraction/separation principle,and the product was characterized by laser particle size analyzer,scanning electron microscope and X-ray diffractometer.The product was obtained of high purity,good morphology,good dispersibility and high added value; using the principle of 24 intermediates,salt extraction was performed using ammonia solution with n-butanol-water system and n-butanol-acetone-water system respectively,but the separation was not ideal;by application of 35 to change the physical or chemical state of the body,the ammonia solution was cooled and crystallized,the crystal was mainly ammonium chloride,crystal extraction of magnesium chloride was not achieved.

Key words: TRIZ, magnesium hydroxide, light powder, impurity