Ana amfani da shi don manyan busassun rabuwa da gawayi da ganguwa na kwal, tare da maye gurbin karban hannu na gargajiya.Zaɓen da hannu yana da matsaloli kamar ƙarancin ɗaukar gangu, ƙarancin yanayin aiki ga ma'aikatan hannu, da tsananin ƙarfin aiki.Mai sarrafa bushewa mai hankali zai iya cire yawancin gangu a gaba, rage ƙarfin aiki na ma'aikata, rage yawan amfani da wutar lantarki da lalacewa na injin, rage yawan wankin da ba shi da amfani sosai a cikin tsarin wanke-wanke, rage sludge na gangue da nauyin tsarin ruwa na slime, da kuma inganta yadda ya kamata da kuma daidaita ingancin danyen kwal don wankewa, da kuma rage farashin shirye-shiryen kwal.