Isiphetho:Lo mbhalo uthatha umsebenzi wokuthola amaqhwa e-granite njengesibonelo, uqhuba ucwaningo mayelana nokulinganisa izinto zokwakha ze-granite overburden, isimiso sokusebenza sokuqala, kanye nesisombululo esihleliwe, sibeka phambili isisombululo sezindlela zokwenza i-sand ehlanjululwe evela kwi-granite overburden.

Umsebenzi wokukhiqiza isithunzi nezigcawu sekuyisikhathi eside siyakhula futhi sekwaba umkhiqizo oqeqeshwe kakhulu wokuhambisa izakhiwo. Phakathi kokuguqulwa komsebenzi lowo ekwakheni nasekuhlolweni kwemisebenzi esikhulu, ukuphathwa kwe-overburden yama-mine kuhlala kuyinto ebalulekile. Indlela yokuvimbela imiphumela emibi yasemoyeni, nokuzisebenzisa ngokugcwele ukuze kuthuthukiswe inzuzo yemini yimibono ebalulekile nengozimbile okufanele ukuthi yonke imisebenzi yomgodi iyicabangele. Lesi sihloko sithatha...Isikhunta Umqondo wokwakha umshini wokuhlola izinto eziqunyiwe, njengesibonelo, ukuhlola ukuvivinywa kwempahla yokuqala yekhrayiti, indlela yokuqala, kanye nendlela entsha, ukucubungula isisombululo esiphelele sezobuchwepheshe sokwenza isanti ehlanzekileyo ngokusebenzisa i-granite overburden.

1. Isingeniso

Umsebenzi wokuchitha ama-granite unethuba elikhulu le-overburden kanye nomthamo omkhulu we-overburden okumele kucatshangelwe. Ngenxa yokungakwazi ukwakha indawo enkulu yokuthihlwa endaweni yomsebenzi, umugqa wokukhiqiza i-washed sand ngokusebenzisa i-mining overburden uqalisiwe kanye nomsebenzi wokuhlola ama-granite ore.

Process for Producing Washed Sand from Granite Overburden

2. Izici Zamakhulu

I-ore kule ndawo yomoya yiy-amfibole biotite granite diorite eneminyaka ephakathi kuya embilini, ebonakala ngombala omnyama futhi inemifanekiso ye-granite eneminyaka ephakathi kuya embilini kanye nesakhiwo esingumqolo. Isiqulatho somzimba siqukethe ikakhulukazi i-plagioclase, i-potassium feldspar, i-quartz, i-biotite, ne-amfibole, ngesilinganiso se-SiO2 esiyisuka ku-68.80% kuya ku-70.32%. I-ore iyinzima, ngamandla okunqoba okukucasula phakathi kwe-172 kuya ku-196 MPa, okuyisilinganiso se-187.3 MPa. I-overburden ikakhulukazi iyindwangu yomhlabathi (i-topsoil) kanye ne-granite ehlanganisiwe kakhulu, enehlanganiso engenalungiselelo yobubanzi. Ikakhulukazi iy-

Ukutholwa kokulinganiselwa kwesihlabathi, i-clay, kanye nolwimi olukhulu lwedatha ye-overburden, imikhiqizo yethulwa emiqondweni emithathu emelela indawo yomgodi futhi yazivivinya endaweni yokuvivinya yendawo. Ukuhlaziywa kwedatha ye-experimental kubonisa ukuthi inani le-clay ku-overburden lilinganiselwa ku-35%, futhi i-fineness modulus ilungele, okwenza ihlukaniswe njenge-sand ephakathi.

3. Ukwakheka Kwezinhlelo Nokuhlolwa Kwezinto

Ngenxa kokukhulu komgodi, uhlelo lomgodi, isikhathi sokuphila, uhlelo lokwenza umsebenzi wokuthuthukisa, kanye nomkhakha oqondisiwe wokudayiswa kwe-sand eyi-natural, ukwakheka kokwenza i-sand ehlanjululwe kusukela emgodini kuqondisiwe.

Isithako esikhulu yi-sand ehlanzwe, kanye nezinto ezivela kuyo ezinjenge-mud cakes ne-backfill gravel/umhlabathi olahliwe.

4. Isicwangciso Sokusebenza Sokudala

Umkhondo wokukhiqiza wokuqala wokulungiselela i-sand ehlanzwe kusuka emithonjeni oyinhloko, ikakhulukazi uhlanganisa i-workshop yokucisha imithonjeni oyinhloko, i-workshop ye-sand ehlanzwe, i-shed yokugcina i-sand ehlanzwe, uhlelo lokwelapha amanzi angcolile, kanye nezitsha zokuthutha ngezikhonkwane.

Ngemva kokudliwa yisikrini esijikijele, izinto ezinkulu kunama-60 mm zicishiwe yi-fineIsithuthuthu sokuqhekeza izinto. futhi zixutywe nezinto ezincane kunama-60 mm, bese zithunyelwa esikrinini esijikijele esiqinile. Ukucubungula kubekwe ngemikhawulo emithathui-cone crusherFaka i-circuit evaliwe ngenqubo yokuhlola. Izinto ezincane kunama-4.75 mm zihlolwa bese zithunyelwa esikhungweni sokugcina umhlabathi oqeqeshwe, lapho zizoqashwa khona futhi zithunyelwe.

(1) Isizinda Sokucisha Izinto Zesithunzi

Izinto zesithunzi zokukhwebisa zithunyelwa ngemoto ku-hopper yokwamukela yesizinda sokucisha, esina-feeder screen ephilile ene-bar spacing engu-60 mm. Izinto ezihlukaniswe yi-screen zicishiwe yi-jaw crusher encane bese zixutywe nezinto ezisezantsi kwe-60 mm, ezithunyelwa esizindeni sokugcoba isihlahla nge-belt conveyor. Ngemva kokugcoba nokuhlukanisa esizindeni sokugcoba isihlahla, izinto ezisuka ku-4.75 mm kuya ku-40 mm zithunyelwa emuva ku-cone crusher encane, ezakha i-circuit evulekile ne-circular vibrating screen esizindeni sokugcoba isihlahla.

Indlela esetshenziswe yi-jaw crusher enhle ukuqhekeza izindonga ezimbalwa nezibloko ezinkulu kakhulu, okuqinisekisa ukugeza nokwahlukanisa. Ngesivinini sokudlulisa esingu-220 t/h, leli thuthukisiwe yayihlanganisa:

  • 1 isihlungi esinamandla (4500×1200 mm, inamandla okukhipha i-220 t/h)
  • 1 i-jaw crusher enhle (inamandla okukhipha i-45 t/h, <75% umkhawulo)
  • 1 i-cone crusher (inamandla okukhipha i-50 t/h, <80% umkhawulo)

(2) I-Workshop ye-Sand egeziwe

Izinto ezicindwe zithuthwa nge-belt conveyor kusihlungi esijikijela esikhulu kwi-workshop ye-sand egeziwe, esinamakhono okuhlunga amathathu ne-pipe yokusasaza amanzi ukugeza, ukuhlukanisa izinto zibe yi-

Idatshwe okubonakalayo kwakhiqizwa okuncane kakhulu kwempahla >4.75 mm. Ngemva kokucindezela nokuhlunga, impahla >40 mm yayithengiswa njengesihlabathi sokugcwalisa. Isixazululo sensimbi sokucisha yayiqatshelwe:

  • Ama-vibrating screens amabili amakhulu (amandla okucisha ama-260 t/h)
  • Ama-spiral sand washers amabili (amandla okucisha ama-140 t/h)
  • Ama-combined sand washing/fine sand recovery units amabili (ngamunye une-bucket-wheel washer, i-linear dewatering screen, kanye ne-hydrocyclone)

Isikhungo sokusebenza kwamanzi ashiyiwe (3)

I-overburden processing line ilandela inqubo yokucisha, lapho amanzi asetshenziswa kakhulu khona ukuze kucishwe i-screening machine kanye ne-sand washing fine sand recovery unit. Isethi ye-wastewater...

Isikhungo sokushintshwa kwamanzi aqinile (esinokukwazi ukukhipha ama-650 t/h) sasisekelwe ku:

  • 1 isikhululo sokwenza impahla (28m)
  • 4 imishini yokucisha amanzi ngokushesha (uhlobo lwe-800/2000)

Lo mbhalo uqhathanisa isiqulatho sokuqala somsebenzi wokulungiselela umhlabathi ohlanzekileyo emgodini we-granite nezinqubo ezilungisiwe. Ngokusebenzisa izindlela ezintsha nokwenza izinguquko ezigqamile ezinhlobonhlobo zezinto zokucisha, izinto zokuhlola, izinto zokuhlola umhlabathi, kanye nezinto zokushintshwa kwamanzi aqinile, le nkampani iye yasebenzisa imali encane, yenza imveliso ibe yemodeli enhle futhi yenza ilayini yemveliso ibe yinkimbinkimbi. Manje, ilayini yemveliso yomhlabathi ohlanzekileyo evela emgodini we-ov...