1. A high-alumina raw material, comprising in weight-percent, based on dry weight:
8
Al2O3
50-80%
MgO
2-15%
SiO2
1-15%
CaO
0.5-20%
Fe2O3
0.5-2%
Na2O
0.5-2%
Al (metallic)
0.1-2%
AlN
0.1-1%
K20
0.1-1.5%
F
0.1-2%
Cl
0.1-0.8%
other
5%
components, not to exceed
loss on ignition, not to exceed
15%
and wherein the mineral form of Al2O3 comprises in weight-percent:
9
aluminium hydroxide
20-60%
corundum -Al2O3
10-40%
spinel MgAl2O4
5-40%
wherein the aluminium hydroxide is present as aluminium mono-hydroxide Al2O3.H2O and aluminium tri-hydroxide Al2O3.3H2O with a weight ratio between Al2O3.H2O and Al2O3.3H2O exceeding 0.25.
2. A high-alumina raw material in of claim 1, wherein the aluminium mono-hydroxide has the crystallographic form of boehmite.
3. A method of producing a the high-alumina raw material of claim 1 from an alumina product, wherein the alumina product is a by-product of a treatment process of aluminum salt slags the alumina product comprising in weight-percent, based on dry weight
10
Al2O3
50-80%
MgO
2-15%
SiO2
1-15%
Al (metallic)
1-5%
CaO
0.5-5%
Fe2O3
0.5-2%
Na2O
0.5-2%
AlN
0.1-2%
K2O
0.1-1.5%
F
0.1-2%
Cl
0.1-0.8%
other components,
5%
not to exceed
loss on ignition, not to
15%
exceed
and wherein the mineral form of Al2O3 comprises, in weight-percent:
11
aluminium hydroxide
20-50%
corundum -Al2O3
10-40%
spinel MgAl2O4
5-40%
with more than 90 weight-% of the mineral form of Al2O3 having a particle size of less than 500 m, said alumina product containing more than 25 weight-% water, wherein the method comprises the steps of mechanically compacting the alumina product to a bulk density of more than 1.1 gcm3 (on dried basis), and treating the alumina product under conditions between a moist warm and a hydrothermal state at a temperature of at least humid 70 C., until the aluminum tri-hydroxide is transformed into aluminium mono-hydroxide and the weight ratio of aluminium mono-hydroxide to aluminium tri-hydroxide exceeds 0.25.
4. The method of claim 3, wherein prior to the mechanical compacting, a quantity of burnt lime is mixed into the alumina product, wherein said quantity does not exceed 20 weight % of a total weight of the mixture, and wherein at least 90 weight-% of said quantity of burnt lime has a particle size smaller 500 m.
5. The method of claim 3, wherein prior to the mechanical compacting, the alumina product is dried to a residual moisture content of less than 5 weight-%. and wherein the alumina product is mechanically compacted and simultaneously ground up by a vibrational grinder.
6. A method of producing ceramic and refractory materials, cement, porosifyed binding agent building materials, slag formers for iron and steel, mineral wool and ceramic fibers comprising using the high-alumina raw material of claim 1 as a source of sinter-active alumina.
7. A mixture for manufacturing ceramic and refractory materials, cement, porosified binding agents, slag formers for iron and steel, mineral wool and ceramic fibers. wherein the mixture comprises the high-alumina raw material of claim 1 and at least one of a calcium oxide source an iron oxide source and a silicon oxide source.
8. The mixture of claim 7, wherein the calcium oxide source comprises at least one of lime, limestone, gypsum, anhydrite, dolomite, and cement.
9. The mixture of claim 7, wherein the iron oxide source comprises at least one of burnt iron sulfide, haematite, and red mud.
10. The mixture of claim 7, wherein the silicon oxide source comprises at least one of clay, sand, and fly ash.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A process for acquiring seismic data for prospecting for hydrocarbons comprising:
a) creating an array of receiver locations in the field where each receiver location includes a node;
b) providing at least a first and a second geophone connected to each node of the array of receiver locations where the first and second geophones provide a composite signal of the vibrations sensed from the ground where the first geophone is configured to have a first vibrational frequency sensitivity range and the second geophone is configured to have a second and different vibrational frequency sensitivity range;
c) providing a third geophone at each node wherein the third geophone is configured to have a third and different vibrational frequency sensitivity range; and
d) delivering seismic energy into the ground to create an upcoming seismic wave field to be sensed by the geophones at the various receiver locations of the array.
2. The process according to claim 1 wherein the step of providing a third geophone having a third and different vibrational frequency sensitivity range more particularly includes the third geophone frequency sensitivity range overlapping the first and second frequency sensitivity ranges.
3. The process according to claim 1 wherein each node includes an autonomous recorder.
4. The process according to claim 3 wherein the array of receiver locations is altered by collecting autonomous recorders from some receiver locations and deploying autonomous recorders to new receiver locations.
5. The process according to claim 1 wherein each node is attached to a long cable that includes multiple nodes along its length.
6. A process for acquiring seismic data for prospecting for hydrocarbons comprising:
a) creating an array of receiver locations in the field where each receiver location includes a node;
b) providing at least a first and a second geophone connected to each node of the array of receiver locations where the first and second geophones provide a composite signal of the vibrations sensed from the ground where the first geophone is configured to have a first vibrational frequency sensitivity range and the second geophone is configured to have a second and different vibrational frequency sensitivity range;
c) providing a third geophone at each node wherein the third geophone has the same vibrational frequency sensitivity as one of the first and second vibrational frequency sensitivity ranges; and
d) delivering seismic energy into the ground to create an upcoming seismic wave field to be sensed by the geophones at the various receiver locations of the array.
7. A process for acquiring seismic data for prospecting for hydrocarbons comprising:
a) creating an array of receiver locations in the field where each receiver location includes a node;
b) providing at least a first and a second geophone connected to each node of the array of receiver locations where the first and second geophones provide a composite signal of the vibrations sensed from the ground where the first geophone is configured to have a first vibrational frequency sensitivity range and the second geophone is configured to have a second and different vibrational frequency sensitivity range;
c) providing additional geophones at each node wherein at least one of the additional geophones has the same vibrational frequency sensitivity as one of the first and second vibrational frequency sensitivity ranges; and
d) delivering seismic energy into the ground to create an upcoming seismic wave field to be sensed by the geophones at the various receiver locations of the array.
8. The process according to claims 1, 6, or 7 wherein the first and second vibrational frequency sensitivity ranges do not overlap.
9. The process according to claims 1, 6, or 7 wherein the first and second vibrational frequency sensitivity ranges overlap.
10. The process according to claims 1, 6, or 7 further including the step of connecting each geophone to the node.
11. A process for acquiring seismic data for prospecting for hydrocarbons comprising:
a) creating an array of receiver locations in the field where each receiver location includes a node;
b) providing at least a first and a second geophone connected to each node of the array of receiver locations where the first and second geophones provide a composite signal of the vibrations sensed from the ground where the first geophone is configured to have a first vibrational frequency sensitivity range and the second geophone is configured to have a second and different vibrational frequency sensitivity range,
wherein each node includes a plurality of geophones where each geophone has a spike and each spike is inserted into the ground wherein at least two geophones have the same frequency sensitivity range and at least one additional geophone has a frequency sensitivity range different from the frequency sensitivity range of the first two geophones.
12. The process according to claims 1, 6, 7, or 11 wherein said first geophone has a vibrational frequency sensitivity range within the range of 1 to 100 Hz, 2 to 100 Hz, or 2 to 60 Hz and said second geophone has a vibrational frequency sensitivity range within the range of 8 to 300 Hz, 8 to 250 Hz, or 10 to 200 Hz.
13. The process according to claims 1, 6, 7, or 11 wherein geophones having different vibrational frequency sensitivity ranges have one or more of:
a) magnets of different sizes;
b) springs of different strengths;
c) coils of different sizes; or
d) coils of different structures.