Translation of "Weißfeinkalk" in English

The spreading and distribution of the binding agent – in this case quicklime – are controlled electronically.

Foamed mixtures of fine white lime with 10 wt. % powdered clay have a specific surface area in the range of 30 to 60 m2 /g, depending on the process and the amount of pore-forming agent used, for example, aluminum powder.

Numerous additives can be added to the base material which is especially lime hydrate or fine white lime or to the water used for slaking the unslaked lime. Such additives include especially powdered clay, burnt clay, bentonites, thixotropic bentonites with a high montmorillonite content, gas concrete dust, expanded clay, ground fines from production of limestone bricks or production of yalistone (translated from the German "yalisteinherstellung"), powdered trass, trass lime, bleaching earths, cements, calcium aluminates, sodium aluminates, calcium sulfide, organic sulfides, calcium sulfite, carbonaceous sorbents such as blast furnace coke, lignite dust, activated carbon and ground or untreated flue ash from burning hard coal as well as water glass and accelerators and/or retarders of hydraulic setup such as those conventionally used in the cement industry (for example, such pore-forming substances as Addiment LP1 and LP2, foaming agents 1 TM and 4 TM or retarder VZ).

In a 1 l tilting kneader having Z kneading blades (from Aachener Misch- und Knetmaschinenfabrik Peter Kupper GmbH & Co. KG), 476 g of 99.5% strength acetic acid (7.89 mol) were added to 200 g of fine white lime (about 89.3% of CaO, 3.18 mol of CaO) while kneading in a period of 25 minutes, and thoroughly kneaded for 90 minutes.

In the kneader used in Example 1, 548 g of 99.5% strength acetic acid (9.08 mol) and 565 g of 45% strength potassium hydroxide solution (4.53 mol) were added to 138 g of fine white lime (about 89.3% of CaO, 2.20 mol of CaO) while kneading, the acetic acid and the potassium hydroxide solution being added alternately in portions of in each case of maximum of 100 g, and kneading being carried out for 30 minutes between each two additions.

The partly neutralized acetic acid prepared in this manner was reacted with 200 g of fine white lime (about 89.3% of CaO; 3.18 mol) with kneading in the kneader used in Example 1.

In a beaker, an approximately 10% strength milk of lime was prepared from 104 g of fine white lime (about 89.3% of CaO, 1.66 mol of CaO) and 862 g of water.

In the kneader used in Example 1, 536 g of 99.5% strength acetic acid (8.88 mol) were added to 200 g of fine white lime (about 89.3% of CaO, 3.18 mol of CaO) while kneading in a period of 25 minutes, and thoroughly kneaded for 90 minutes.

This partly neutralized acetic acid was added while kneading in a period of 25 minutes to 200 g of fine white lime (about 89.3% of CaO, 3.18 mol) which was present in the kneader used in Example 1, and kneading was then continued for 180 minutes.

Added thereto is at least one solid constituent, preferably having at least one mineral constituent such as, for example, rock meal, Solnhofen cement, white fine lime, etc.

To a mixture consisting of 90 percent by weight of SiO2 sand and 10 percent by weight of fine white lime (CaO), is added an organosiloxane having the formula RSi(OCH3)2 O0.5 in the amount shown in the following table, where 70 percent of the number of R radicals are methyl radicals and 30 percent of the number of the R radicals are 2-ethylhexyl radicals, followed by the addition of the amount of water necessary to slake the lime and form a mixture which is sufficiently moist for pressing.

As a rule, aerated grades of concrete which can be used for these purposes, are produced substantially from 40% to 65% by weight of sand, 5% to 25% by weight of fine white lime, 15% to 35% of cement (preferably Portland cement) and 0.5% to 10% by weight of anhydrous gypsum (calcium sulphate) with the use of conventional gas producing agents such as aluminium powder in particular.

For the last 14 years, the company eins has been sourcing up to 2,000 tonnes of white fine lime for the production of lime milk and 1,200 tonnes of quick lime from the Harz region.

According to a preferred embodiment variant, the reactively cured bituminous mixture has at least one first constituent and at least one second constituent, with the first constituent being or including a liquid constituent with bitumen and oil and/or resin, in particular consisting of renewable raw materials, that is mixed with one or more solid materials, in particular with at least one mineral component, preferably rock meal, Solnhofen cement, white fine lime, etc., and the second constituent being or including a hardener or, as the case may be, activator such as, for example, water.

Some of the lump lime is processed further to make quicklime.

After an intensive review process, the pure quicklime is stored in our silos and subsequently packed in bags.

This makes fine white lime from KFN unique and ideally suited for numerous fields of application.

Be it lump lime, quicklime or hydrated lime, our entire range of products is under constant quality control.

The quicklime used in the process should be reactive and free of any colouring component such as iron or manganese as the bricks are often used un-plastered.