人工砂生產過程中,人工砂成品質量好壞,直接影響到混凝土質量,因此在設計人工砂生產工藝時要慎重,根據人工砂石粉在脫水及洗砂機洗砂中流失較多,在制砂過程中采用雙轉子制砂機和配套設備(顎式破碎機、洗砂機、振(zhen)動篩等),專門生產人工砂,具(ju)有成品粒行好、成砂率高、細度模數可調、生產成本低等優(you)點。
在人(ren)工(gong)(gong)(gong)砂(sha)(sha)高(gao)生(sheng)產(chan)量的前(qian)提(ti)(ti)下,還另外研究(jiu)設計了的細(xi)砂(sha)(sha)回收工(gong)(gong)(gong)藝,既能人(ren)工(gong)(gong)(gong)砂(sha)(sha)生(sheng)產(chan)成(cheng)(cheng)本,又可提(ti)(ti)高(gao)人(ren)工(gong)(gong)(gong)砂(sha)(sha)生(sheng)產(chan)量和調(diao)整(zheng)人(ren)工(gong)(gong)(gong)砂(sha)(sha)細(xi)度模數。根據人(ren)工(gong)(gong)(gong)砂(sha)(sha)生(sheng)產(chan)工(gong)(gong)(gong)藝布置,生(sheng)產(chan)的成(cheng)(cheng)品砂(sha)(sha)由三部(bu)分按的比例混(hun)合而成(cheng)(cheng)的。
三種砂的產量分配統計為:篩分樓篩底部,篩余下來的石屑占20%~30%,棒磨機產砂占20%~28%,立式沖擊式破碎機(制砂(sha)(sha)(sha)機)產(chan)砂(sha)(sha)(sha)占(zhan)40%~45%。三種砂(sha)(sha)(sha)的細(xi)度模數統計為(wei)(wei),篩分樓底(di)部石(shi)屑3.3-3為(wei)(wei)粗(cu)砂(sha)(sha)(sha);棒磨式制砂(sha)(sha)(sha)機產(chan)砂(sha)(sha)(sha)2.4左右為(wei)(wei)細(xi)砂(sha)(sha)(sha),鵝卵石(shi)制砂(sha)(sha)(sha)機產(chan)砂(sha)(sha)(sha)2.7~2.9為(wei)(wei)中粗(cu)砂(sha)(sha)(sha)。
人工砂生產線加工三種砂的混合工藝是:
篩分樓(lou)底部粗砂(sha)先與沖擊式破碎機(制(zhi)砂(sha)機)檢查篩篩底中砂(sha)混合,再與棒磨機細(xi)砂(sha)混合后進入成品(pin)砂(sha)倉堆存。通(tong)過成品(pin)砂(sha)倉地弄皮帶送到裝車平臺。終測試砂(sha)的細(xi)度(du)模(mo)數(shu)、顆(ke)粒(li)級(ji)配和(he)石粉含量(liang)均在裝車平臺堆場進行,如發(fa)現細(xi)度(du)模(mo)數(shu)、石粉含量(liang)偏(pian)(pian)大或(huo)偏(pian)(pian)小,顆(ke)粒(li)級(ji)配比例偏(pian)(pian)差時,及時反饋到生產車間,調(diao)整設(she)備組合等。細(xi)度(du)模(mo)數(shu)是衡量(liang)人工(gong)砂(sha)質量(liang)的一個重要指標,直(zhi)接影響到混凝(ning)土(tu)的和(he)易性(xing)、強度(du)、抗滲性(xing)及經濟指標。
由于各(ge)地人(ren)工(gong)制(zhi)砂機的(de)(de)生產(chan)礦(kuang)源的(de)(de)不(bu)同、生產(chan)加工(gong)機制(zhi)砂的(de)(de)設(she)備和(he)工(gong)藝不(bu)同,生產(chan)出(chu)人(ren)工(gong)砂粒型和(he)級(ji)配可(ke)能會有(you)很(hen)大的(de)(de)區別。中譽鼎力通過對(dui)設(she)備、人(ren)、材(cai)料、環境、工(gong)藝等(deng)各(ge)種因(yin)素的(de)(de)面試驗分析(xi),找出(chu)關鍵原因(yin)并針對(dui)性地采取多項(xiang)控制(zhi)措(cuo)施(shi),使(shi)人(ren)工(gong)砂細度(du)模數達到了合同要求.
已有632人(ren)成功參與(yu)