Njengamanje, iShayina inaka kakhulu ukuvikelwa kwemvelo kanye nokongiwa kwamandla. Ngokuphathelene nokucubungula izinsiza zamalahle ngokujulile, amakhasimende amaningi awazi ukuthi yikuphi okungcono ekukhetheni amalahle acoliwe umshini wokugaya oqondile kanye ne-ball mill yamalahle acoliwe. Okulandelayo, i-HCM ihlaziye izici zamalahle, okuzuzisa ukukhetha kwekhasimende umshini wokugaya amalahle.

I-HLMamalahle acoliwe umshini wokugaya oqondile 

1. Ngenxa yomehluko ohlotsheni lokuthungwa kwamalahle kanye nebhoyila esetshenzisiwe, izidingo zobukhulu bezinhlayiya zamalahle zihlukile. Ngokuvamile, izinga lokuhlola licishe libe ngu-90% kuma-meshe angu-200. Imishini yokugaya kufanele ikwazi ukulungisa ubuncane;

2. Ngokuvamile, amabhlogo amalahle awawona izinto ezomile kakhulu. Ngokuvamile, amalahle aqukethe umswakama ongaphezu kuka-15%, kanti i-lignite ifinyelela ngisho naku-45%. Ngakho-ke, imishini yokugaya amalahle kumele ikwazi ukuzivumelanisa nezinto ezinomswakama omningi futhi yomise izinto ngenkathi igaya. Akudingeki ukusetha umshini wokomisa ohlukile ukuze kwandiswe inqubo yokomisa;

3. Amalahle aqukethe amanzi avuthayo avuthayo, futhi amalahle ngokwawo ayasha, ngakho-ke kumele kuthathwe izinyathelo ezivimbela ilangabi futhi ezingaqhumi ngesikhathi sokugaya;

4. Amalahle aqukethe ukungcola okunzima nokulukhuni ukukugaya, okudingekayo ukuze kuvumelane nokungcola okunzima nokulukhuni ukukugaya ngesikhathi sokugaya;

Umshini wokugaya ibhola nomaamalahle acoliweumshini wokugaya oqondileUkulungiselela amalahle acoliwe? Nakuba kokubili umshini wokugoqa oqondile wamalahle ocoliwe kanye nomshini wokugoqa ibhola kungacubungula amalahle ngokujulile, kusukela ekuhlaziyweni kwezici zamalahle, umshini wokugoqa oqondile wamalahle acoliwe ufaneleka kakhulu ngezizathu ezintathu:

Okokuqala, umshini wokugaya amalahle omile ocoliwe usebenzisa inqubo yokukhiqiza eyingqayizivele kanye nesakhiwo, esithatha indawo encane, esinothuli nomsindo omncane ngesikhathi sokukhiqiza, futhi sikhiqiza amalahle acoliwe anezinga eliphezulu lokusebenza kahle kanye nokusebenza kahle kokushisa.

Okwesibili, uma kuqhathaniswa ne-ball mill yesilinganiso esifanayo, ukusetshenziswa kwamandla kwe-pulverized coal vertical roller mill kungonga u-20~40%, ikakhulukazi uma umswakama wamalahle ongahluziwe mkhulu. Ngaphezu kwalokho, le vertical roller mill isebenzisa ukusebenza komoya ovunguzayo. Ngokulungisa izinga lokushisa lomoya ongenayo kanye nomthamo womoya, amalahle angahlungiwe anomswakama ofinyelela ku-10% angagaywa futhi omiswe. Umthamo womoya ophezulu usetshenziselwa ukuhlangabezana nesidingo sokomisa ngomswakama ophezulu, ngaphandle kokufaka imishini yokusiza.

Okwesithathu, umshini wokugoqa amalahle ocoliwe uhlanganisa izinqubo ezinhlanu zokuchoboza, ukugaya, ukomisa, ukukhethwa kwempuphu kanye nokuthuthwa. Inqubo ilula, ukwakheka kwayo kuncane, indawo yephansi icishe ibe ngu-60-70% wohlelo lokugaya ibhola, kanti indawo yokwakha icishe ibe ngu-50-60% wohlelo lokugaya ibhola.

Into ebaluleke kakhulu ukuthi umshini wokugaya amalahle omile ocoliweisebenzisa i-powder concentrator esebenza kahle kakhulu, enekhono eliphezulu lokukhetha i-powder kanye negumbi elikhulu lokulungisa. Ubuncane bokukhetha i-powder bungafinyelela ngaphansi kuka-3% wezinsalela zesihlungo ezingu-0.08 mm, ezingahlangabezana nezidingo zobuncane bokugaya amalahle noma i-anthracite esezingeni eliphansi emgqeni wokukhiqiza usimende.