一、建筑石膏粉?

1、 Building gypsum powder

建筑石膏粉，作為石膏粉家族中應(yīng)用最為廣泛的一員，在濟(jì)南的建筑領(lǐng)域發(fā)揮著基礎(chǔ)性作用。它主要由天然二水石膏經(jīng)過低溫煅燒（107 - 170℃）脫水而成，其主要成分是半水硫酸鈣（CaSO??0.5H?O） 。建筑石膏粉具有凝結(jié)硬化快的特點(diǎn)，一般在加水?dāng)嚢韬?5 - 10 分鐘內(nèi)便開始初凝，30 分鐘左右即可終凝，這一特性使得施工效率大幅提高，尤其適用于工期緊張的項(xiàng)目 。此外，它硬化后體積微膨脹，膨脹率約為 0.5% - 1%，能有效避免因收縮產(chǎn)生的裂縫，確保了墻面、地面等施工部位的平整度和美觀度 。建筑石膏粉還具備良好的防火性能，遇火時(shí)，二水石膏中的結(jié)晶水會(huì)逐漸釋放，吸收大量熱量，在材料表面形成水蒸氣幕，阻止火勢蔓延，為人員疏散和滅火爭取寶貴時(shí)間 。?

Architectural gypsum powder, as the most widely used member of the gypsum powder family, plays a fundamental role in the construction field in Jinan. It is mainly made by low-temperature calcination (107-170 ℃) dehydration of natural dihydrate gypsum, and its main component is calcium sulfate hemihydrate (CaSO ? · 0.5H ? O). Architectural gypsum powder has the characteristic of fast setting and hardening. Generally, it starts to set within 5-10 minutes after mixing with water and can reach final setting in about 30 minutes. This feature greatly improves construction efficiency, especially for projects with tight schedules. In addition, after hardening, its volume slightly expands with an expansion rate of about 0.5% -1%, which can effectively avoid cracks caused by shrinkage and ensure the flatness and aesthetics of construction parts such as walls and floors. Architectural gypsum powder also has good fire resistance. When exposed to fire, the crystalline water in dihydrate gypsum will gradually release, absorb a large amount of heat, and form a water vapor curtain on the surface of the material, preventing the spread of fire and buying valuable time for personnel evacuation and firefighting. ?

二、高強(qiáng)石膏粉?

2、 High strength gypsum powder

高強(qiáng)石膏粉相較于普通建筑石膏粉，在性能上有了質(zhì)的飛躍。它通常是將天然石膏或化學(xué)石膏經(jīng)過高溫煅燒（170 - 200℃），并添加適量外加劑制成 。高強(qiáng)石膏粉的強(qiáng)度明顯更高，其 3 小時(shí)的抗壓強(qiáng)度可達(dá) 25 - 40MPa，而普通建筑石膏粉僅為 3 - 5MPa 。這使得高強(qiáng)石膏粉在一些對強(qiáng)度要求嚴(yán)苛的建筑部位大顯身手，如制作高強(qiáng)度的石膏裝飾線條、石膏雕塑等。在濟(jì)南的一些高端商業(yè)建筑和藝術(shù)場館中，常常能看到用高強(qiáng)石膏粉制作的精美裝飾構(gòu)件，它們不僅為建筑增添了獨(dú)特的藝術(shù)魅力，還憑借高強(qiáng)石膏粉的高強(qiáng)度特性，保障了裝飾構(gòu)件的穩(wěn)定性和耐久性 。同時(shí)，高強(qiáng)石膏粉的耐磨性也優(yōu)于普通石膏粉，在地面找平、工業(yè)廠房地面處理等場景中應(yīng)用廣泛，能有效承受長期的人員走動(dòng)、設(shè)備摩擦等外力作用 。?

Compared to ordinary building gypsum powder, high-strength gypsum powder has made a qualitative leap in performance. It is usually made by calcining natural gypsum or chemical gypsum at high temperatures (170-200 ℃) and adding appropriate additives. The strength of high-strength gypsum powder is significantly higher, with a compressive strength of 25-40MPa after 3 hours, while ordinary building gypsum powder is only 3-5MPa. This makes high-strength gypsum powder highly effective in some building parts that require strict strength, such as making high-strength gypsum decorative lines, gypsum sculptures, etc. In some high-end commercial buildings and art venues in Jinan, exquisite decorative components made of high-strength gypsum powder can often be seen. They not only add unique artistic charm to the building, but also ensure the stability and durability of the decorative components with the high-strength characteristics of high-strength gypsum powder. At the same time, the wear resistance of high-strength gypsum powder is better than that of ordinary gypsum powder, and it is widely used in ground leveling, industrial plant floor treatment and other scenarios. It can effectively withstand long-term external forces such as personnel movement and equipment friction. ?

三、脫硫石膏粉?

3、 Desulfurization gypsum powder

脫硫石膏粉是一種具有環(huán)保意義的石膏粉品種。它主要來源于火力發(fā)電廠、鋼鐵廠等企業(yè)的煙氣脫硫過程，是石灰石 - 石膏濕法脫硫工藝的副產(chǎn)品 。在濟(jì)南，隨著環(huán)保政策的日益嚴(yán)格，眾多工業(yè)企業(yè)加大了煙氣脫硫力度，從而產(chǎn)生了大量的脫硫石膏粉。脫硫石膏粉與天然石膏在化學(xué)成分上相似，但在晶體形態(tài)、雜質(zhì)含量等方面存在差異 。它的顆粒較細(xì)，分布均勻，純度較高，經(jīng)過適當(dāng)處理后，可廣泛應(yīng)用于建筑材料領(lǐng)域。例如，將脫硫石膏粉用于生產(chǎn)紙面石膏板，能有效降低生產(chǎn)成本，同時(shí)實(shí)現(xiàn)資源的循環(huán)利用。在濟(jì)南的一些新型綠色建筑中，大量使用了以脫硫石膏粉為原料的紙面石膏板作為隔墻和吊頂材料，既滿足了建筑的功能需求，又符合環(huán)保理念，助力濟(jì)南向綠色城市邁進(jìn) 。

Desulfurized gypsum powder is a type of gypsum powder with environmental significance. It mainly comes from the flue gas desulfurization process of enterprises such as thermal power plants and steel plants, and is a by-product of the limestone gypsum wet desulfurization process. In Jinan, with the increasingly strict environmental policies, many industrial enterprises have increased their efforts in flue gas desulfurization, resulting in a large amount of desulfurization gypsum powder. Desulfurized gypsum powder is chemically similar to natural gypsum, but there are differences in crystal morphology, impurity content, and other aspects. Its particles are fine, evenly distributed, and of high purity. After appropriate treatment, it can be widely used in the field of building materials. For example, using desulfurization gypsum powder to produce paper faced gypsum board can effectively reduce production costs and achieve resource recycling. In some new green buildings in Jinan, a large amount of paper faced gypsum board made from desulfurization gypsum powder is used as partition and ceiling materials, which not only meets the functional needs of the building but also conforms to environmental protection concepts, helping Jinan move towards a green city.

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