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<div id="sqeswu6" class="kc-box"> <div id="sqeswu6" class="bd"><img class="prev" src="/theme/images/c_r1.png" /> <img class="next" src="/theme/images/c_r2.png" /> <ul> <li><img alt="" src="http://www.greenwellep.com/d/file/p/2020/10-29/25bf2157b4dc881304e58330d6cf2a45.jpg" /></li> <li><img alt="" src="http://www.greenwellep.com/d/file/p/2020/10-29/36c7743e2b3287c48d89350040bf90d4.jpg" /></li> <li><img alt="" src="http://www.greenwellep.com/d/file/p/2020/10-29/df7e317dc61ea528f6402db1a9ef5c70.jpg" /></li> <li><img alt="" src="http://www.greenwellep.com/d/file/p/2020/10-29/1ee68c911b16fa041e92e409f44661f8.jpg" /></li> </ul> </div> <div id="sqeswu6" class="txt2"> <p> </p> <p> 新建砂石骨料生產(chǎn)線(xiàn)項目在前期設計時(shí)，必須首先考慮水資源供應狀況和水資源保護治理情況，因此，在其他條件允許的情況下，優(yōu)選干法工藝，其次是干濕結合工藝，在產(chǎn)品不滿(mǎn)足市場(chǎng)或工程建設要求時(shí)才考慮采用濕法生產(chǎn)工藝；其次從資金投入、設備管理、自動(dòng)化程度、占地、生產(chǎn)成品砂石骨料單位成本等綜合因素考慮，也是優(yōu)先考慮干法生產(chǎn)工藝，次之干濕結合法，然后是濕法工藝。砂石骨料生產(chǎn)工藝設計與設備選型是骨料系統設計的關(guān)鍵環(huán)節，直接影響砂石生產(chǎn)的質(zhì)量和成本，在設計與設備選型時(shí)，應對料源巖石的性質(zhì)、骨料成品的級配和質(zhì)量要求、主要設備的技術(shù)性能等進(jìn)行充分研究，既要滿(mǎn)足砂石成品的級配和質(zhì)量要求，又要適應料源巖石的性質(zhì)；系統設備配置既要具有技術(shù)上的先進(jìn)性，經(jīng)濟上的合理性，還要保證系統運行的可靠性。</p> </div> <div id="sqeswu6" class="clear"> </div> </div> </div> </div> <div id="sqeswu6" class="box htit"> <h2 class="wow fadeInDown">人工制砂常見(jiàn)工藝</h2> </div> <div id="sqeswu6" class="box xq-text wow fadeInLeft"> <p><strong><span style="font-size:18px;">1.干法制砂</span></strong></p> <p> 北方干旱、少雨，水資源缺乏，在這種自然條件下，優(yōu)先采用干法工藝生產(chǎn)砂石骨料。下圖所示為典型的干法生產(chǎn)工藝流程，原料經(jīng)過(guò)振動(dòng)給料篩和篩分機組合篩除泥土以后，一般要經(jīng)過(guò)粗碎和中碎兩道破碎后再進(jìn)行檢查篩分。</p> <p> 通過(guò)篩分將礦石分成3個(gè)部分：達不到產(chǎn)品粒度要求的礦石返回中碎設備重新破碎，這部分返料在中細碎和篩分之間形成—個(gè)閉路循環(huán)；中等粒度礦石直接作為骨料成品進(jìn)入產(chǎn)品倉或者堆場(chǎng)；小于一定粒度的原料進(jìn)入立式整形制砂機進(jìn)行整形制砂，制砂部分產(chǎn)生的石粉通過(guò)選粉機和空氣除塵設備收集起來(lái)，進(jìn)入密閉的石粉倉。</p> <p><strong><span style="font-size:18px;">2.濕法制砂</span></strong></p> <p> 生產(chǎn)過(guò)程中水作為工作介質(zhì)和抑塵措施，全程參與砂石骨料的生產(chǎn)，故稱(chēng)為濕法工藝，在水資源豐富的地區采用。</p> <p> 濕法生產(chǎn)工藝流程，原料經(jīng)過(guò)振動(dòng)給料機或振動(dòng)篩篩去泥土以后，大塊原料要經(jīng)過(guò)粗碎和中碎兩道破碎后再進(jìn)行篩分，將原料分成3個(gè)部分：到不到產(chǎn)品粒度要求的粗礦石返回中碎設備重新破碎，這部分返料在中碎和篩分之間形成一個(gè)閉路循環(huán)；中等粒度礦石直接作為骨料成品進(jìn)入產(chǎn)品倉或堆場(chǎng)；滿(mǎn)足整形制砂機進(jìn)料粒度要求的原料進(jìn)入立式整形制砂機進(jìn)行整形制砂，生產(chǎn)出來(lái)的砂石經(jīng)過(guò)檢查篩分成砂和各種規格骨料，再經(jīng)螺旋或斗輪洗砂機沖洗后成為成品砂，骨料可以經(jīng)洗石機沖洗后成為成品。通過(guò)分料閥可以調節各種成品骨料的比例。</p> <p><strong><span style="font-size:18px;">3.干濕結合生產(chǎn)工藝</span></strong></p> <p> 這種生產(chǎn)工藝用水量介于濕法、干法兩種生產(chǎn)工藝之間，在我國南方以石灰石為主要原料的水電工程配建砂石廠(chǎng)中應用較多。其典型工藝流程與濕法工藝流程幾乎一樣，主要區別就是檢查篩分階段不再加水沖洗，相應地成品砂也部分或全部不進(jìn)行沖洗。</p> <p> 所以相對于濕法來(lái)說(shuō)用水量少了很多，成品砂石粉含量相應也高了很多。但是制砂過(guò)程中產(chǎn)生的骨料還和濕法生產(chǎn)一樣經(jīng)過(guò)洗石機沖洗后才算是成品，另外在預篩分環(huán)節也要用水沖洗去除石料上的泥土、石粉等雜質(zhì)，沖洗后粒度小于5—40mm的礦石進(jìn)入制砂環(huán)節。相對于干法工藝，生產(chǎn)過(guò)程中還需要配置相應的給排水和污水處理設備，只不過(guò)供水量相對于濕法工藝少了一些。</p> <p>干濕結合法的缺點(diǎn)就是由于制砂原料中含水率在6％～10％，特別容易引起篩分設備篩孔堵塞造成篩分困難，進(jìn)而引起成品砂產(chǎn)量減少，單位生產(chǎn)成本增加。</p> <p style="text-align: center;"><img alt="" src="http://www.greenwellep.com/d/file/p/2020/11-09/4bf7fdd5aeca11442c6b0b3bb95b24bb.jpg" /></p> <p style="text-align: center;"><span style="font-size:16px;">以上方案僅供參考，具體方案需要根據物料、現場(chǎng)、需求等具體情況確定。</span></p> <p align="center"> </p> </div> <div id="sqeswu6" class="hbg hbg2"> <div id="sqeswu6" class="box htit"> <h2 class="wow fadeInDown">人工制砂常用設備</h2> </div> <div id="sqeswu6" class="box xq-text wow fadeInRight"> <p> </p> <dl class="dl-j"> <dt><a ><img src="http://www.greenwellep.com/d/file/p/2020/11-13/6579031563f899d4071bbdd18537fe15.jpg" style="width: 370px; height: 304px;" /></a></dt> <dd><a ><span>VSI立軸沖擊破碎機</span></a> <p><a >節能顯著(zhù)、生產(chǎn)成本低</a></p> <p><a >粒型優(yōu)異、級配合理</a></p> <p><a >易損件采用優(yōu)質(zhì)耐磨材料制成</a></p> <p><a >用稀油潤滑，降低部件損耗率。</a></p> </dd> </dl> <dl class="dl-j"> <dt><a ><img alt="" src="http://www.greenwellep.com/d/file/p/2020/11-13/18d38e190f45513ae71e9d09a0de80ff.jpg" style="width: 370px; height: 304px;" /></a></dt> <dd><a ><span>輪斗洗砂機</span></a> <p><a >結構簡(jiǎn)單，故障率低</a></p> <p><a >處理量大，洗凈度高</a></p> <p><a >耗水量低，功率消耗小</a></p> <p><a >細砂和石粉流失少</a></p> </dd> </dl> <dl class="dl-j no"> <dt><a ><img src="http://www.greenwellep.com/d/file/p/2020/11-13/2ecac561bc6b49a2a71b0a584949a4b7.jpg" style="width: 370px; height: 304px;" /></a></dt> <dd><a ><span>螺旋洗砂機</span></a> <p><a >密封結構好、全封閉傳動(dòng)裝置</a></p> <p><a >使用壽命長(cháng)，幾乎沒(méi)有易損件</a></p> <p><a >洗凈度高，所洗物料流失少、選洗效率高 </a></p> <p><a >可調式溢流堰板</a></p> </dd> </dl> <div id="sqeswu6" class="clear"> </div> <div id="sqeswu6" class="clear"></div> </div> </div> <div id="sqeswu6" class="jiange"></div> <div 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