Bilston site - James Durrans & Sons Ltd.
Key criteria
- Capacity 25.000 MT/a
- 1 Ball mill, 1 Attritor mill, 1 Lupulco mill
- 10 MT/hour grinding capacity
- 900 MT coal storage capacity
- 56 MT Bentonite storage capacity
- 6 external silos (150 MT total storage capacity)
For more than 80 years, the main product of pulverized coal produced in our company has been used as an additive in the preparation of green sand moulds and mainly for the production of iron castings. This product can be supplied in different forms - depending on the weight and configuration of the castings. But over time, only two types have dominated our suppy to the foundry industry.
These both have a low ash content and a high level of volatile, whereas only one is classified as being an expanding coal or "swelling" coal. The high carbon content combined with a low sulphur content ensures a product friendliness in turn leading to an excellent casting performance.
Duisburg site - RST Bentonite & Minerals
Key criteria
- Capacity 45,000 MT/a (with 2 pendulum mills)
- Production of bentonite and blends with coal as well as other additives (graphite, resin, etc.)
- 6,000 MT storage bentonite capacity
- 1,500 MT storage of coal capacity
- 6 silos (incl. 1 double-chamber silo)
- Storage capacity in silos of 800 MT
- 10 MT/hour grinding capacity
- Sand and quality laboratory
- Silo and Big Bag packaging
Our business partner, RST Bentonite & Minerals, a long established and traditional company located in the Port area of Duisburg, has an in-house grinding plant with an impressive grinding capacity of 10t per hour. The main & key production facility is the grinding and blending of bentonite / coal and other lustrous carbon additives. A well-equipped sand and quality laboratory ensure the continuity of raw materials and testing and checking of customer supplied sand samples.
The company has the advantage of having a 3-prong terminal, namely water/rail/road and is located at one of the best locations at Europe's largest inland port.
煤质分析
| 典型粒度分布 % 残留 筛分煤粉 | 1.00 mm 16 # BSS | 0.50 mm 30 # BSS | 0.21 mm 72 # BSS | 0.15 mm 100 # BSS | 0.075 mm 200 # BSS | Pan |
|---|---|---|---|---|---|---|
| 30 | 0 | 23 | 47 | 12 | 13 | 5 |
| 75 | 0 | 13 | 37 | 15 | 22 | 13 |
| 100 | 0 | 10 | 28 | 12 | 22 | 28 |
| 145 | 0 | 2 | 18 | 15 | 25 | 40 |
| 190 | 0 | 0 | 5 | 8 | 30 | 57 |
| 240 | 0 | 0 | 0 | 2 | 8 | 90 |
筛分的煤粉主要是作为潮模砂型系统的添加剂，以减少铸模中的空气，防止金属渗透进型砂中，保证铁铸件表面的光滑和清洁。我们根据金属类型和铸件的大小，决定使用哪一种筛分煤粉。通常，粗粒度的用于高压垂直造型系统, 例如迪砂设备，中等或细粒度的被用于水平造型系统，但是也随其他因素而变化，例如性能，膨润土类型和型砂质量。
我们专门挑选了两种主要的煤粉进行研究，它们都有良好的属性，特别是其灰分低，挥发性高。高碳、低硫的煤粉，对产品非常适用，其性能也因此得到了充分发挥。
一些铸造行家对膨胀指数高的煤粉青睐的同时，而另外一些业内人士更喜欢挥发分较高且没有膨胀性的煤粉。
| 成分 | 值 |
|---|---|
| 灰分 | 2 – 3.5 % |
| 挥发分 | 34 – 42 % |
| 水分 | 4 – 7 % |
| 光泽 | 8 – 12 % |
| 硫 | 0.6 – 0.8 % |