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变压器硅钢中硅含量为4.05～4.55%,在电解过程中,硅易在阳极上氧化成无定形二氧化硅,呈硅酸水凝胶状态,与炭化物,非金属夹什物共存于电解液中,需过滤分离。但过滤会使硅酸滞留,持续很长时间,大量硅酸包裹炭化物,沾污了夹什物,对分析带来困难,而处理大量硅胶会引起夹什物损耗。分析砖钢夹什物的关键在于控制硅胶的产生,经过改进,降低胶状硅酸析出量的技术措施如下: 一适当增加阳极液在电解过程中更换阳极液刚极区Fe-2e→Fe~(2+)为主,阴极区以产生4H_2O+4e—→2H_2↑+4OH~-反应为主。硅胶随电解时间的增长而增加,采取缩短电解时间,增加电解次数,每隔24小时更换内电解液,使阳极区内电解液pH稳定。在实验中发现未更换的内电
Silicon in transformer silicon steel content of 4.05 ~ 4.55%, in the electrolysis process, silicon is easily oxidized to amorphous silica in the anode, silicate hydrogel state, and carbide, non-metallic objects coexist in the electrolyte, To be separated by filtration. But the filter will make siliceous acid retention, continued for a long time, a large number of silicate wrapped carbonized, contaminated by the folder of things, the analysis of the difficulties, while dealing with a large number of silica gel can cause clip loss. The key to the analysis of brick and steel products is to control the generation of silica gel. The technical measures to reduce the amount of colloidal silicic acid after the improvement are as follows: a. The anodizing solution is appropriately changed to replace the Fe-2e → Fe ~ 2+), and the cathode region mainly produces 4H2O + 4e- → 2H2 + + 4OH ~ - reaction. Silicone gel increases with the increase of electrolysis time. Electrolysis time is shortened and the number of electrolytes is increased. The inner electrolyte solution is changed every 24 hours to stabilize the pH of the electrolyte in the anode zone. Found in the experiment did not replace the internal electricity