石英砂濾料的顏色(se)(se)通常為(wei)乳白(bai)色(se)(se)、或無色(se)(se)半透明(ming)狀,它的顏色(se)(se)是決(jue)定(ding)其品質的重要指(zhi)標,同純度一(yi)樣(yang)。如果產(chan)品純度越(yue)高,就會(hui)越(yue)白(bai),白(bai)度與純度是成正(zheng)比的。
純(chun)白無(wu)雜(za)質(zhi)、雜(za)色的(de)(de)石(shi)(shi)英(ying)砂(sha)濾(lv)料(liao)較好,有(you)的(de)(de)石(shi)(shi)英(ying)砂(sha)濾(lv)料(liao)透明度(du)也比較高,這種石(shi)(shi)英(ying)砂(sha)濾(lv)料(liao)都歸(gui)于高質(zhi)量產(chan)(chan)品(pin)。有(you)雜(za)色、白度(du)不是很(hen)高的(de)(de)石(shi)(shi)英(ying)砂(sha)濾(lv)料(liao)歸(gui)于一(yi)般石(shi)(shi)英(ying)砂(sha)產(chan)(chan)品(pin)。通過酸洗的(de)(de)石(shi)(shi)英(ying)砂(sha)濾(lv)料(liao)純(chun)度(du)和白度(du)都較高。
白度(du)是(shi)(shi)決(jue)定(ding)石(shi)英(ying)(ying)(ying)(ying)砂(sha)(sha)(sha)質(zhi)(zhi)量(liang)的重要指標。影(ying)響石(shi)英(ying)(ying)(ying)(ying)砂(sha)(sha)(sha)白度(du)的先(xian)決(jue)因(yin)素(su)是(shi)(shi)石(shi)英(ying)(ying)(ying)(ying)石(shi)中(zhong)(zhong)含有的雜質(zhi)(zhi),即氧(yang)(yang)(yang)(yang)化(hua)(hua)(hua)鐵和(he)(he)其(qi)他一些(xie)雜質(zhi)(zhi)。石(shi)英(ying)(ying)(ying)(ying)砂(sha)(sha)(sha)是(shi)(shi)一種化(hua)(hua)(hua)學性質(zhi)(zhi)穩定(ding)的硅(gui)酸(suan)鹽礦(kuang)物。它(ta)的主要成分是(shi)(shi)二(er)氧(yang)(yang)(yang)(yang)化(hua)(hua)(hua)硅(gui),在大多(duo)數酸(suan)(除了氫氟酸(suan))中(zhong)(zhong)是(shi)(shi)二(er)氧(yang)(yang)(yang)(yang)化(hua)(hua)(hua)硅(gui),在氫氧(yang)(yang)(yang)(yang)化(hua)(hua)(hua)鉀溶液中(zhong)(zhong)是(shi)(shi)二(er)氧(yang)(yang)(yang)(yang)化(hua)(hua)(hua)硅(gui)。二(er)氧(yang)(yang)(yang)(yang)化(hua)(hua)(hua)硅(gui)具有高(gao)硬(ying)度(du)和(he)(he)耐腐蝕性,因(yin)此在工(gong)業和(he)(he)制造(zao)業中(zhong)(zhong)得(de)到廣(guang)泛應用。通常情況下,石(shi)英(ying)(ying)(ying)(ying)砂(sha)(sha)(sha)濾料多(duo)用于水處理(li)中(zhong)(zhong),對(dui)于白度(du)的要求不是(shi)(shi)很嚴(yan)格。而特(te)殊(shu)行業,如陶瓷、玻璃等,對(dui)石(shi)英(ying)(ying)(ying)(ying)砂(sha)(sha)(sha)參數有嚴(yan)格的要求,其(qi)中(zhong)(zhong)純度(du)和(he)(he)白度(du)很關鍵(jian)。因(yin)此,提純和(he)(he)增白成為石(shi)英(ying)(ying)(ying)(ying)砂(sha)(sha)(sha)生產中(zhong)(zhong)的兩個關鍵(jian)步驟。
所以說,對(dui)于水處(chu)理石(shi)英(ying)(ying)砂濾(lv)(lv)料而言不(bu)是白度(du)(du)越(yue)高就(jiu)越(yue)好,白度(du)(du)對(dui)石(shi)英(ying)(ying)砂濾(lv)(lv)料的(de)(de)(de)影響不(bu)大(da)。白度(du)(du)越(yue)高,說明石(shi)英(ying)(ying)砂濾(lv)(lv)料內的(de)(de)(de)雜質(zhi)相(xiang)應的(de)(de)(de)就(jiu)越(yue)少,石(shi)英(ying)(ying)砂濾(lv)(lv)料的(de)(de)(de)純度(du)(du)高,但在(zai)不(bu)同行(xing)業中,對(dui)于石(shi)英(ying)(ying)砂濾(lv)(lv)料的(de)(de)(de)要求是不(bu)一樣(yang)的(de)(de)(de),白度(du)(du)僅(jin)是一方面。
拿(na)水(shui)(shui)處理(li)行業來說,石英砂(sha)濾(lv)(lv)料(liao)的粒徑和硬度等指(zhi)標同(tong)樣重要,在(zai)不同(tong)水(shui)(shui)質的處理(li)上,對于石英砂(sha)濾(lv)(lv)料(liao)的粒徑都有一個規定范(fan)圍,且石英砂(sha)濾(lv)(lv)料(liao)粒徑不能超出(chu)或者低于規定粒徑,不然石英砂(sha)濾(lv)(lv)料(liao)粒徑出(chu)入過大很(hen)容易導致濾(lv)(lv)層受力不均勻,出(chu)水(shui)(shui)量不夠,過濾(lv)(lv)水(shui)(shui)質不達標等問題。
其次就(jiu)是(shi)石(shi)(shi)英(ying)砂濾料(liao)的強(qiang)(qiang)度。在(zai)過(guo)濾過(guo)程中,多(duo)介質濾層會(hui)長(chang)期處于水流沖(chong)擊環境下,且多(duo)介質過(guo)濾器會(hui)定期反(fan)沖(chong)洗作業,這期間石(shi)(shi)英(ying)砂濾料(liao)會(hui)與水流、雜質、顆粒間產(chan)生(sheng)摩擦,如果強(qiang)(qiang)度不達標,這些環節會(hui)產(chan)生(sheng)大量損耗(hao),用(yong)著用(yong)著石(shi)(shi)英(ying)砂濾料(liao)就(jiu)沖(chong)沒(mei)了,由(you)此可見石(shi)(shi)英(ying)砂濾料(liao)強(qiang)(qiang)度也不容忽視。