鄭州環(huán)球重工機(jī)械有限公司一直致力于建筑建材行業(yè)15年有余,擁有現(xiàn)代化生產(chǎn)制造能力,成熟的工藝,高尖端的科技研發(fā)機(jī)構(gòu),海沙淡化作為選礦行業(yè)的新型產(chǎn)業(yè),在河沙與人工制砂地域有限,價(jià)格昂貴情況下,沿海地區(qū)豐富的海沙資源,必將成為建筑主導(dǎo)用沙,環(huán)球重工海沙淡化生產(chǎn)線其核心就是采用合理有效的淡化工藝,分離海沙中有害腐蝕物質(zhì),鄭州環(huán)球重工機(jī)械有限公司在海沙淡化生產(chǎn)線海沙場主機(jī)設(shè)備設(shè)計(jì)生產(chǎn)線10余年,在海淡化機(jī)械研發(fā)生產(chǎn)具備過硬的技術(shù)力量,海沙淡化對于目前海沙市場來說還是一項(xiàng)新鮮話題,然而海沙清洗設(shè)備卻默默耕耘數(shù)十年載。海沙清洗機(jī)主要包括:提升輸送,螺旋海沙水洗,淡水循環(huán)使用,海沙篩分,海沙淡化等過程最終海沙經(jīng)過海沙淡化機(jī)械等清洗后達(dá)到國家建筑用沙標(biāo)準(zhǔn)。
Having devoted in building material industry for over 15 years, Zhengzhou Huanqiu Heavy Industries Ltd possesses modern manufacturing capacity, mature technologies, high-end technical research and development insitution. Sea sand desalting is a new-type industry in mineral dressing, and considering that the river sand and artificial sand are restricted by region and of high price, sea sand will certainly become the dominant sand in building industries. The core of sea sand desalting produciton line is to adopt rational and effective desalting technology to separate the harmful substance from the sea sand and thereby the sea sand can reach the national standard of sand for building. |
環(huán)球重工擁有現(xiàn)代生產(chǎn)車間,大型立車,滾齒機(jī),自動(dòng)焊,卷板機(jī)。公司擁有現(xiàn)代化標(biāo)準(zhǔn)廠房10000多平方米,員工200多名,其中工程師10名,技術(shù)人員28名。擁有完整、科學(xué)、質(zhì)量管理體系,通過ISO9001國際質(zhì)量體系認(rèn) CE歐盟質(zhì)量認(rèn)證,承接日產(chǎn)500T-5000T海沙淡化生產(chǎn)線,礦石洗石生產(chǎn)線,礦料精選等作業(yè),現(xiàn)面向全國誠招各級加工代理。我公司秉著長遠(yuǎn)共贏的原則歡迎各界朋友的前來參觀、考察、洽談業(yè)務(wù)
Huanqiu Heavy Industries Ltd possesses modern production workshop, large vertical lathe, gear hobbing machine and plate bending roll. The company also own modern standard plant occupying a land of over 10,000m3, and more than 200 employees including 10 engineers and 28 technicists. With complete quality management system, and ISO9001 International Quality System Certification as well as CE Quality Certification, the company is able to undertake 500t-5,000t/d sea sand desalting production line, ore washing line and mineral aggregate selection line. Now the company is advertising for processing agents at all levels all ower China. Holding the principle of long-term win-win, our company welcome friends from all walk of life to visit, investigate and negotiate business. |
海沙為什么不可以用在建筑上? 中國擁有漫長的海岸線,具有豐富的海砂資源,海沙雖然潔凈,但是海砂不能直接被用于建筑中,主要是因?yàn)槠浜袃煞N有害物質(zhì):海砂中的含鹽量主要來自海水,海水中硫酸鹽含量折合SO2-4僅為Cl-的1/10左右,這樣少量的硫酸鹽對于混凝土及鋼筋無明顯有害作用,因此海砂含鹽量主要是含氯鹽的問題;炷量障吨械乃,通常以飽和Ca(OH)2形式存在,其中還含有一些NaOH和KOH,pH值約為12.5。這樣的強(qiáng)堿性環(huán)境中,鋼筋表面形成一種鈍化薄膜,正是這種很薄的氧化膜層,使鋼筋受到保護(hù),不致于腐蝕。氯鹽能破壞混凝土鋼筋表面的堿性保護(hù)膜,而促使鋼筋發(fā)生銹蝕;炷林袖摻畈粩噤P蝕的結(jié)果,不但削弱了鋼筋截面,而且由于銹蝕產(chǎn)物的膨脹作用而使混凝土保護(hù)層開裂、剝落,影響到結(jié)構(gòu)的正常使用。氯鹽對于預(yù)應(yīng)力鋼筋的危害性更大。另外,海砂中的氯鹽還可能對混凝土拌合物有促進(jìn)凝結(jié)硬化的作用(含鹽量在0.2%~0.3%以上時(shí)比較明顯);對于大體積混凝土則有初期溫升較高的問題;使用含鹽量較高的海砂的混凝土早期強(qiáng)度較高,但后期強(qiáng)度可能較低,海砂中的鹽分還可能使混凝土的干燥收縮增加?傊,氯離子是導(dǎo)致混凝土中鋼筋腐蝕的最為有害的物質(zhì)。
海沙中貝殼水母有機(jī)物對建筑腐蝕影響? 貝殼類主要成分為CaCO3,貝殼,水母等類雖然為惰性材料,一般不會與水泥發(fā)生化學(xué)反應(yīng),但這些輕物質(zhì)往往呈薄片狀,表面光滑,本身強(qiáng)度很低,且較易沿節(jié)理錯(cuò)裂,因而與水泥漿的粘結(jié)能力很差。一般來說,當(dāng)貝殼類等輕物質(zhì)含量較多時(shí),會明顯使混凝土的和易性變差,使混凝土的抗拉、抗壓、抗折強(qiáng)度及抗凍性、抗磨性、抗?jié)B性等耐火性能均有所降低。因此必須對其含量加以限制。
China's long coastline provides abundant sea sand resource. Although the sea sand is clean and contains little mud, it cannot be directly used in buildings because it contains two kinds of hazardous substances: chloridion and organic matter, which influence the solidification structure of buildings and corrode the concrete. The salts in sea sand mainly come from seawater in which the SO2-4 (converted from sulfate) is only one-tenth of the Cl-. The sulfate is so little that it cannot damage the concrete or reinforcing steel bar, therefore the chloride is the main hazardous substances. Usually the moisture in the space between concrete exist in form of saturated Ca(OH)2, and a little NaOH and KOH, PH valve being 12.5. In such strong alkaline environment, a layer of passivation film will form on surface of reinforcing steel bar, and it is this thin oxide film that protect the reinforcing steel bar from being corroded. Chlorine salt will damage the alkaline protection film on the surface of concrete reinforcement, and corrode the reinforcing steel bar. The corrosion will damage the section of the concrete reinforcement, and the expansive action of the corrosion will make the concrete cover rupture and flake away, which will have an impact on the normal use of the structure. Chlorine salt do more harm to prestressed reinforcement. In addition, the chlorine salt in sea sand can also enhance setting and hardening of concrete mixture, which is obvious when the salt content is over 0.2%-0.3%; for mass concrete, it will make the temperature rise higher at preliminary stage, which makes the early strength of concrete much higher and the later strength lower. The salt in sea sand may also increase the drying shrinkage of the concrete. In brief, the chloride is the most harmful substance causing reinforcement corrosion in concrete. |
海沙的利用使用廣泛,使其能用在建筑裝飾中,必須經(jīng)淡水處理掉其中的氯、堿、鹽、貝殼雜質(zhì)等帶有腐蝕性的元素。環(huán)球重工的海沙淡化處理設(shè)備就是基于以上情況而生產(chǎn)的。目前已有成熟的生產(chǎn)工藝,依據(jù)客戶要求,廠地設(shè)計(jì),設(shè)備研發(fā),工藝設(shè)計(jì),設(shè)備定做生產(chǎn)。 ■海沙淡化生產(chǎn)線主要設(shè)備 包括:篩分機(jī),輸送機(jī),斗提,螺旋洗砂機(jī),滾筒洗砂機(jī),沙石烘干機(jī)等設(shè)備組成 ■沙淡化設(shè)備工作流程: 目前,在建筑市場,河沙的價(jià)格很貴,是海沙的幾倍,所以有人就拿未經(jīng)淡化處理的海沙來冒充河沙賺取黑心錢,這給各地的建筑工程造成了很大的安全隱患。要想分辨是否是海沙,其實(shí)很簡單,看看沙里面是否含有海洋細(xì)小貝殼就可以了。 海沙淡化設(shè)備有螺旋洗砂機(jī)為首,環(huán)球重工清洗海沙脫鹽淡化建筑用沙設(shè)備廠家針對海沙清洗,海沙淡化有著豐富的經(jīng)驗(yàn)
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■海沙淡化設(shè)備工作原理: 海砂淡化生產(chǎn)線工作原理:海沙首先經(jīng)由皮帶輸送機(jī)輸入到篩砂機(jī),通過篩砂機(jī)篩去貝殼和鵝卵石,再進(jìn)入下層的振動(dòng)篩,再次篩選較小貝殼雜質(zhì)后,經(jīng)滑道進(jìn)入螺旋清洗池進(jìn)行清洗,并將海沙,通過螺旋機(jī)輸送到二次清洗池中,經(jīng)二次清洗后,合格成品即可傳送到堆場上采用滾筒洗砂機(jī)內(nèi)設(shè)置螺旋葉片和抓斗,確保出料自動(dòng)完成;滾筒旋轉(zhuǎn)攪拌,供水系統(tǒng)連續(xù)不斷注入淡水,對海砂進(jìn)行震蕩沖洗,使含鹽水不斷地從分離筒低端口溢出,精洗采用螺旋洗砂機(jī)慢轉(zhuǎn)速淡水浸泡摩擦反復(fù)螺洗完成去鹽工作。 |
■海沙淡化建筑用沙標(biāo)志: 鄭州環(huán)球重工機(jī)械有限公司為此研究制造了成熟的海沙淡化機(jī)械設(shè)備,其能很好的將海沙通過設(shè)備清洗達(dá)到淡化,經(jīng)過質(zhì)檢部門檢驗(yàn)完全符合國家施工質(zhì)量標(biāo)準(zhǔn)(氯離子含量≤0.06%),達(dá)到國家標(biāo)準(zhǔn)《建筑用砂(GB/T14684-2001)》、《混凝土質(zhì)量控制標(biāo)準(zhǔn)(GB60164-92)》、行業(yè)標(biāo)準(zhǔn)《普通混凝土用砂質(zhì)量標(biāo)準(zhǔn)及檢驗(yàn)方法(JGJ52-92)》、《建設(shè)部關(guān)于嚴(yán)格建筑用海砂管理的意見(建標(biāo)[2004]143號)》等相關(guān)文件要求。 |
■海沙淡化生產(chǎn)線是否有市場: 現(xiàn)有資源只會越用越少,替代品的出現(xiàn)是必然的,在建筑裝飾、工程建設(shè)中,沙礦是不可或缺的原料,但是隨著近年來經(jīng)濟(jì)發(fā)展,對沙礦的需求日益增大,內(nèi)河沙礦的大量開采,以及國家對內(nèi)河環(huán)境的保護(hù),沙礦需求供應(yīng)日趨緊張。我們知道沿海含有豐富沙礦,但是。海沙雖然潔凈,但鹽分高,對工程質(zhì)量造成很大的影響。由于現(xiàn)在河沙緊俏,價(jià)格昂貴,而海沙相對便宜的多。將海沙用淡水清洗和干燥,使它滿足作為建筑材料的要求,這成為了一項(xiàng)新的技術(shù)課題。 |