石墨课堂—阴极串接石墨化炉装、出炉操作
装(zhuang)(zhuang)炉(lu)毛(mao)坏(huai)(huai)(huai)平端头(tou),挤压成(cheng)型(xing)的(de)毛(mao)坯(pi)必须(xu)(xu)将剪切(qie)时形成(cheng)的(de)不(bu)平整端头(tou)切(qie)除,并保持两端头(tou)的(de)平行。振动成(cheng)型(xing)毛(mao)坏(huai)(huai)(huai)必须(xu)(xu)将两端头(tou)黏附的(de)填充焦清理干(gan)净,带拔模斜度(du)的(de)炭(tan)块(kuai)(kuai)必须(xu)(xu)一(yi)正一(yi)反装(zhuang)(zhuang)炉(lu)。焦床(chuang)铺设(she)(she),铺设(she)(she)高度(du)应使(shi)毛(mao)坯(pi)中心(xin)与(yu)(yu)炉(lu)头(tou)中心(xin)对准,并将焦床(chuang)适当(dang)夯实,以(yi)避(bi)免毛(mao)坯(pi)放(fang)置(zhi)后下陷。设(she)(she)置(zhi)跨接(jie)(jie)电(dian)极,跨接(jie)(jie)电(dian)极用软带吊人(ren)炉(lu)内,放(fang)置(zhi)在预设(she)(she)的(de)石墨滑(hua)块(kuai)(kuai)上,并留出(chu)足够的(de)制(zhi)品放(fang)置(zhi)空间。起吊过程必须(xu)(xu)小心(xin)放(fang)置(zhi),以(yi)免将电(dian)极震裂。石墨垫块(kuai)(kuai)和电(dian)流分布(bu)(bu)板设(she)(she)置(zhi),每(mei)块(kuai)(kuai)毛(mao)坏(huai)(huai)(huai)下部放(fang)置(zhi)两块(kuai)(kuai)石墨垫块(kuai)(kuai)并要(yao)求距离均匀。电(dian)流分布(bu)(bu)板要(yao)根据毛(mao)坏(huai)(huai)(huai)装(zhuang)(zhuang)炉(lu)表总长度(du)确定适当(dang)的(de)厚度(du),放(fang)置(zhi)在毛(mao)坏(huai)(huai)(huai)与(yu)(yu)炉(lu)头(tou)电(dian)极、跨接(jie)(jie)电(dian)极接(jie)(jie)触部位。

毛(mao)(mao)(mao)坯(pi)(pi)(pi)(pi)标识,毛(mao)(mao)(mao)坯(pi)(pi)(pi)(pi)装炉(lu)前必须实测长(zhang)度(du)并做好(hao)对(dui)中标记,按实测长(zhang)度(du)列(lie)表(biao)调(diao)整(zheng),使(shi)左右两柱总长(zhang)度(du)相差少(shao)于(yu)3mm。按列(lie)表(biao)顺序(xu)对(dui)毛(mao)(mao)(mao)坯(pi)(pi)(pi)(pi)编号(hao)(hao),然(ran)后(hou)按编号(hao)(hao)装炉(lu)。毛(mao)(mao)(mao)坏(huai)装炉(lu),按编好(hao)的序(xu)号(hao)(hao)将(jiang)(jiang)(jiang)毛(mao)(mao)(mao)坯(pi)(pi)(pi)(pi)吊(diao)人炉(lu)内(nei)(nei)(nei)放置(zhi)在(zai)预设好(hao)的石墨滑块上(shang)(shang)。并将(jiang)(jiang)(jiang)挠性(xing)石墨垫插入(ru)(ru)接(jie)缝中(含电(dian)流分布板与毛(mao)(mao)(mao)坯(pi)(pi)(pi)(pi)的接(jie)缝)。保温(wen)(wen)(wen)料(liao)掩(yan)埋,将(jiang)(jiang)(jiang)符合要(yao)求(qiu)的保温(wen)(wen)(wen)料(liao)吊(diao)入(ru)(ru)炉(lu)内(nei)(nei)(nei),填充在(zai)毛(mao)(mao)(mao)坯(pi)(pi)(pi)(pi)的两侧(ce),让毛(mao)(mao)(mao)坯(pi)(pi)(pi)(pi)上(shang)(shang)部露出(chu)1/4。毛(mao)(mao)(mao)坯(pi)(pi)(pi)(pi)挤紧,用4~5 MPa的压(ya)(ya)(ya)(ya)(ya)力(li)将(jiang)(jiang)(jiang)毛(mao)(mao)(mao)坯(pi)(pi)(pi)(pi)压(ya)(ya)(ya)(ya)(ya)紧,检查接(jie)头连接(jie)情况(kuang)和毛(mao)(mao)(mao)坯(pi)(pi)(pi)(pi)对(dui)中情况(kuang),发现问题进行调(diao)整(zheng)。保温(wen)(wen)(wen)料(liao)覆盖,将(jiang)(jiang)(jiang)符号(hao)(hao)要(yao)求(qiu)的保温(wen)(wen)(wen)料(liao)吊(diao)入(ru)(ru)炉(lu)内(nei)(nei)(nei)覆盖在(zai)毛(mao)(mao)(mao)坏(huai)、电(dian)极上(shang)(shang),厚度(du)不小于(yu)600 mm。炉(lu)芯加(jia)压(ya)(ya)(ya)(ya)(ya),用顶推装置(zhi)向(xiang)炉(lu)芯加(jia)压(ya)(ya)(ya)(ya)(ya),压(ya)(ya)(ya)(ya)(ya)力(li)在(zai)8MPa左右,检查止推墩(dun)处是否压(ya)(ya)(ya)(ya)(ya)紧?如(ru)果压(ya)(ya)(ya)(ya)(ya)紧不好(hao),适(shi)当调(diao)整(zheng)压(ya)(ya)(ya)(ya)(ya)力(li)。

供(gong)(gong)(gong)电(dian)(dian)(dian)(dian)装(zhuang)(zhuang)(zhuang)置(zhi)(zhi)联结(jie),将(jiang)供(gong)(gong)(gong)电(dian)(dian)(dian)(dian)台(tai)车(che)移动(dong)(dong)到炉(lu)头(tou)定位,并(bing)将(jiang)台(tai)车(che)动(dong)(dong)接头(tou)与炉(lu)头(tou)稳固联结(jie)。炉(lu)头(tou)冷(leng)却,开启炉(lu)头(tou)循(xun)环(huan)冷(leng)却水和(he)喷淋冷(leng)却水。供(gong)(gong)(gong)电(dian)(dian)(dian)(dian),按照预先指定好(hao)的供(gong)(gong)(gong)电(dian)(dian)(dian)(dian)曲线(xian)供(gong)(gong)(gong)电(dian)(dian)(dian)(dian)。供(gong)(gong)(gong)电(dian)(dian)(dian)(dian)过程中巡视供(gong)(gong)(gong)电(dian)(dian)(dian)(dian)装(zhuang)(zhuang)(zhuang)置(zhi)(zhi)运行情(qing)况(kuang)、炉(lu)头(tou)和(he)炉(lu)尾工作情(qing)况(kuang)。停(ting)电(dian)(dian)(dian)(dian)、执行完(wan)供(gong)(gong)(gong)电(dian)(dian)(dian)(dian)曲线(xian),停(ting)止(zhi)供(gong)(gong)(gong)电(dian)(dian)(dian)(dian)。将(jiang)炉(lu)头(tou)连结(jie)装(zhuang)(zhuang)(zhuang)置(zhi)(zhi)断开,台(tai)车(che)移动(dong)(dong)到其他需要送电(dian)(dian)(dian)(dian)的炉(lu)头(tou)前。顶(ding)推装(zhuang)(zhuang)(zhuang)置(zhi)(zhi)松(song)开,停(ting)电(dian)(dian)(dian)(dian)后约(yue)8h,将(jiang)顶(ding)推装(zhuang)(zhuang)(zhuang)置(zhi)(zhi)压力(li)卸掉(diao)并(bing)松(song)开炉(lu)上喷淋冷(leng)却,停(ting)电(dian)(dian)(dian)(dian)后约(yue)12h对保(bao)温料喷水冷(leng)却,采用蒸发冷(leng)却方式,要求间断式喷水,不(bu)允许(xu)水渗到制(zhi)品上,也不(bu)允许(xu)水滞留在保(bao)温料中,必须保(bao)证喷淋水蒸发掉(diao)。喷水约(yue)8h停(ting)止(zhi)。