板廠專用骨膠生產工藝：

將骨(gu)料(liao)軋(ya)碎(sui)至平均為(wei)1~8CM大小的碎(sui)塊，用苯、石油(you)(you)醚等溶(rong)劑進行(xing)骨(gu)油(you)(you)的萃(cui)(cui)取(qu)(qu)(qu)(qu)(qu)(qu)，使(shi)骨(gu)料(liao)中(zhong)(zhong)的脂肪含量降至百分(fen)(fen)之(zhi)1以(yi)下(xia)，一(yi)(yi)般(ban)為(wei)百分(fen)(fen)之(zhi)0. 3~ 0. 5左(zuo)右(you)，然后在(zai)一(yi)(yi)個轉鼓中(zhong)(zhong)使(shi)骨(gu)料(liao)相互摩擦，以(yi)使(shi)表(biao)面上殘余的肉(rou)和筋(jin)等分(fen)(fen)離(li)。再裝入漂(piao)白罐中(zhong)(zhong)，加(jia)水(shui)并通(tong)入二氧化硫(liu)氣。二氧化硫(liu)溶(rong)于水(shui)而生(sheng)成(cheng)(cheng)亞硫(liu)酸(suan)，除有(you)漂(piao)白作用外還有(you)酸(suan)處理(li)(li)作用。二氧化硫(liu)使(shi)骨(gu)料(liao)中(zhong)(zhong)的部分(fen)(fen)酸(suan)鈣轉變(bian)為(wei)酸(suan)二氫鈣而溶(rong)解于水(shui)中(zhong)(zhong)，這樣可使(shi)骨(gu)質疏松而便(bian)于用水(shui)萃(cui)(cui)取(qu)(qu)(qu)(qu)(qu)(qu)這一(yi)(yi)工序在(zai)一(yi)(yi)些生(sheng)產(chan)企業(ye)中(zhong)(zhong)俗稱熏骨(gu)。經(jing)二氧化硫(liu)處理(li)(li)和水(shui)洗即送去萃(cui)(cui)取(qu)(qu)(qu)(qu)(qu)(qu)。萃(cui)(cui)取(qu)(qu)(qu)(qu)(qu)(qu)在(zai)0. 25MPA左(zuo)右(you)的壓力下(xia)進行(xing)，因此溫度較高。萃(cui)(cui)取(qu)(qu)(qu)(qu)(qu)(qu)器般(ban)以(yi)6-8個為(wei)一(yi)(yi)組，定時將萃(cui)(cui)取(qu)(qu)(qu)(qu)(qu)(qu)液逐(zhu)罐逆(ni)向流(liu)動。從新裝料(liao)的萃(cui)(cui)取(qu)(qu)(qu)(qu)(qu)(qu)器抽出的是(shi)濃的萃(cui)(cui)取(qu)(qu)(qu)(qu)(qu)(qu)液。萃(cui)(cui)取(qu)(qu)(qu)(qu)(qu)(qu)液經(jing)過濾后再蒸發濃縮到百分(fen)(fen)之(zhi)50左(zuo)右(you)。加(jia)入適(shi)當(dang)的防腐劑后形(xing)成(cheng)(cheng)凝膠(jiao)(jiao)，烘(hong)干(gan)成(cheng)(cheng)為(wei)骨(gu)膠(jiao)(jiao)。