FI61863B - FOERFARANDE FOER FRAMSTAELLNING AV GOEDSEL AV TRAEASKA OCH BARRTRAEDSBARK ELLER ANNAT TRAEAVFALL - Google Patents

Description

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lJ '' UTLÄGGNI NGSSKRIFT ΟΐΟΟό c (45) Patent eyönnrtty 11 10 1932 Patent meddelat ^ (51) Kv.ik? /int.ci.3 C 05 F 11/00 SUO MI —FI N LAN D (21) Ptunttlhtktmu * - Ptttnuiwdknlni 793786 (22) Htkamlipilvl - AMÖknlngidag (A.12.7 9 (23) Alkuplivi - GMtlghetadig OU.12.7 9 (41) Tulhit (vlklHkal - Bllvlt offentlig 09.06. 8l

Patents · and registries / 44) Date of publication of the mitigating kit. - is 06 fl?

Patents and registries AmMcm uth | d och uti. Finland (FI) (7 * 0 Yrjänä Vuori (5M Fertilizer production method from wood ash and softwood bark or other wood waste

The fertilizer is made from bark, wood waste and ash, the fertilizing effect of which has long been known. However, both have been used separately as a raw material for fertilizers and manufacturing methods have been cumbersome. Nor has nature often been able to immediately make full use of the fertilizer.

The present invention includes a method for recovering portions of softwood bark, wood and bark ash covered by the nutrient composition and rapidly as fertilizer for the new cycle of nature in a form that is optimal for the natural biosystem.

Sensitive trace elements are also not wasted in this method. In the method, the ground softwood bark, mainly the waxy and harmful fractions in the bark material, is decomposed at a high temperature so that the harmful substances harmful to the plant can be removed. At the same time, urea and wood and bark ash are added to the ground bark mass using overpressure. The product is then granulated.

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During granulation, urea solution and last ash are added to the surface of the granules. (The ash prevents the granules from sticking and lumps forming. The product also does not stick to the processing machines. The following example and accompanying illustration illustrate the process. In the first step, (only if the phosphorus content is less than 1% of the dry matter) and in any case urea solution and ash from tank 4 (urea from 46%, dosage amount 5 kg / m 2) after which it is heated in a pressure chamber oven at 110 ° to 140 ° C for 5 f pressure 1 -1.6 at. In the second step, after cooling and degassing 6, is added

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the amount of urea solution dispensed is 22 kg / nr from the tank 7, the product is granulated with spring-loaded rollers 8 and finally the ash is added to the surface of the granules by pressure spraying in a mixer 9. The temperature of the granules at this stage is about 90 ° C. During the hot process, for example, harmful lipophilic compounds are removed from the shell, e.g. "resin", which contains terpenoids such as rosin acids, mono- and sesquiterpenes, etc. The product has a particle size distribution of 0.2-8 mm and granules 0 7-10 mm. The dry matter content of the product is 70-75% due to the high temperature and ash.

Nitrogen cannot escape out of reach of plants because it is bound by ash and carbohydrates and the nutrient composition of the product due to nitrogen, phosphorus and potassium as well as micro-nutrients is close to the optimum of plants. The products also do not harm the biology of the soil, as this is a new cycle of nature's own products, which increases the activity and productivity of even poor soils.

The production of fertilizers according to the invention also requires considerably less energy than the production of artificial fertilizers.