Carbonaceous rocks are high ash carbonaceous formations that mostly are deposited in the roof of the brown coal bed. Its quantity achieved 50 % of the mining coal. They are occurring in the dumps while coal being mined.
      Dnieprovsky brown coal basin situated in the central part of Ukraine, unifies more than 150 brown coal deposits, area of from 200 up to 400 km², located mostly by the right coast of the Dnieper river. About 55 deposits are of an industrial value mostly in Alexandriysky brown coal region of Dniepropetrovsk and Kirovograd oblasts. The coal reserves explored consist of 2.4 billion tons.
      The industrial coal carrying is related to precipitation of Buchaksky layer of paleogene (medium eocene). Coal-carrying precipitation of Buchack layer by lythological characteristics are divided into three main stratae (horizons): under-coal, coal and per carbonic ones.
      Under-coal layer is composed of medium and large-size grain grey sands, that transfer in its upper part into fine dark-brown carbonaceous, clay lenses, kaolins, seldom fine coal interlayers. A maximum capacity of a horizon is 25 m, predominating one is 6-8 m.
      The coal rock mass is a unique stock formed more or less in the same time that represents one layer of a simple or complicated construction, less often 2-3 layers separated by carbonaceous sands, carbonaceous clays, sand interlayers. The capacity and composition of coal deposit are not stable, being sharply changed with a coal transition into carbonaceous rocks, high ash coals (mainly in upper part of a deposit).
      A percarbonic rock mass is composed of carbonaceous clays, carbonaceous sands with clay interlayers, sands, lenses and coal interlayers. A total capacity of Buchack precipitation do not exceed 40-45 m, often – 10-15 m [1].
      Carbonaceous clays and sands are related to the category of mine rocks only because the ash content in it is more than 40 %. If this conditionally boundary would be accepted as equal to 50 %, then coal resources would increase 1.5-2 times and the thickness of stripping would decrease 2-3 times.
      Our investigations revealed that carbonaceous rocks are similar by their composition and properties to brown coal, with the ash content from 40 to 60 %, the same composition of elements of organic matter, yield of bitumen and humic acids.
      Preliminary investigations reveled that carbonaceous rocks when utilized in complex may be used as an energy-producing and chemical resource, the base of good carbon adsorbents.

EXPERIMENTAL

RESULTS AND DISCUSSIONS

Table 1. Yield of CC pyrolysis products

Pyrolysis temperature,°С	Yield of pyrolysis products				OM conversion degree, %
	Liquid, % of OM	Gas, % of OM	Carbonizate, % of ОМ	Carbonizate , % of dry CC
Parent CC
600	8,0	32	60	73	40
700	9,0	44	47	67	53
800	9,0	49	42	65	58
900	9,0	59	32	62	68
CC treated by 1М solution of NaOH
600	11,0	37	52	72	48
700	12,0	45	43	70	57
800	12,0	51	37	68	63
900	12,0	61	27	65	73

Table 2. Adsorbents from CC of Verbolozovskiy stripping

Name	Receiving conditions		Yield, % of dry CC	Ash content, %	Specific surface, m2/g	Adsorption capacitance
	t, °С	Activation time, min				of methylene blue, mg/g	of phenol, %
Parent CC	–	–	–	40	3,0	54	–
Carbonizate from parent CC	900	–	63	63	120	52	56
Adsorbent from parent CC	925	30	59	67	205	80	85
Carbonizate from CC treated by NaOH	900	–	58	73	61	58	50
Adsorbent from CC treated by NaOH	925	30	54	79	110	78	72
Adsorbent from brown coal	925	30	38	26	515	77	80

CONCLUSIONS

Literature